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{{Use mdy dates|date=August 2023}}
{{Infobox Grand Prix race report
|Country = United States
|Official name = XXVIII Iceberg United States Grand Prix
|Image = Phoenix Grand Prix Route - 1991.svg
|Year = 1991
|Location = [[Phoenix street circuit]]<br />[[Phoenix, Arizona]]
|Course = Temporary road course
|Distance_laps = 81
|Distance_mi = 187.272
|Distance_km = 301.401
|Scheduled_laps= 82
|Scheduled_mi = 189.584
|Scheduled_km = 305.122
|Weather = Overcast<br />{{convert|25|°C|°F}}<ref>{{cite web|url=http://www.wunderground.com/history/airport/KPHX/1991/3/10/DailyHistory.html?req_city=NA&req_state=NA&req_statename=NA |title=History | Weather Underground |publisher=Wunderground.com |access-date=2013-04-22}}</ref>
|Pole_Driver = {{flagicon|Brazil|1968}} [[Ayrton Senna]]
|Pole_Team = [[McLaren]]-[[Honda in Formula One|Honda]]
|Pole_Time = 1:21.434
|Fast_Time = 1:26.758
|Fast_Lap = 49
|First_Driver = {{flagicon|Brazil|1968}} [[Ayrton Senna]]
|First_Team = McLaren-Honda
|Second_Driver = {{flagicon|France}} [[Alain Prost]]
|Second_Team = Ferrari
|Third_Driver = {{flagicon|Brazil|1968}} [[Nelson Piquet]]
|Third_Team = [[Benetton Formula|Benetton]]-[[Ford Motor Company|Ford]]
|Lapchart = {{F1Laps1991|USA}}
}}
The '''1991 United States Grand Prix''' (formally the '''XXVIII Iceberg United States Grand Prix''') was a [[Formula One]] motor race held on March 10, 1991 in [[Phoenix, Arizona]]. It was the first race of the [[1991 Formula One World Championship]]. The 81-lap race was won from [[pole position]] by [[Ayrton Senna]], driving a [[McLaren MP4/6|McLaren]]-[[Honda in Formula One|Honda]], with [[Alain Prost]] second in a [[Ferrari 642|Ferrari]] and [[Nelson Piquet]] third in a [[Benetton B190|Benetton]]-[[Ford Motor Company|Ford]].
The race marked the respective debuts of future double World Champion [[Mika Häkkinen]] and the [[Jordan Grand Prix|Jordan]] team. It was also the first F1 World Championship race in which ten points were awarded for a win rather than nine, as part of a revised scoring system introduced for 1991. However, it was also to be the last United States Grand Prix until [[2000 United States Grand Prix|2000]], due to poor attendances.
In the two previous years, the championship had been decided when Senna and Prost tangled at [[Suzuka Circuit|Suzuka]]. In [[1989 Japanese Grand Prix|1989]], their collision as team-mates secured Prost's third World Championship; in [[1990 Japanese Grand Prix|1990]], with Prost driving for Ferrari and still in title contention, it handed Senna his second crown. Controversy regarding the nature of the 1990 incident had created great anticipation for the rematch.
==Qualifying==
===Pre-qualifying report===
Several teams were required to participate in the Friday morning pre-qualifying sessions during 1991, in order to reduce the field to thirty cars for the main qualifying sessions on Friday afternoon and Saturday. At the midway point of the season, the pre-qualifying group was to be reassessed, with the more successful teams (over a twelve-month period consisting of the second half of 1990 and the first half of 1991) being allowed to avoid pre-qualifying thereafter, and less successful teams being required to pre-qualify from mid-season onwards.{{citation needed|date= October 2021}}
Eight cars were to take part in pre-qualifying sessions during the first half of the 1991 season, after 1990 ended with no pre-qualifying sessions at the last two Grands Prix, due to the withdrawal of the [[EuroBrun]] and [[Life Racing Engines|Life]] teams. Pre-qualifying was necessary again in 1991 due to the arrival of two new entrants: [[Jordan Grand Prix|Jordan]] and [[Modena (racing team)|Modena]], which were entirely new teams, running two cars each. Another new name, [[Fondmetal]], was essentially a continuation of the defunct [[Osella]] team and was running a single car. Also involved in pre-qualifying were [[Scuderia Coloni|Coloni]], running one car, and [[BMS Scuderia Italia|Scuderia Italia]], running two cars. These were the two least successful surviving teams over the past two half seasons. The fastest four cars would go through to the main qualifying sessions.<ref name="Walker">{{cite book |last=Walker |first=Murray |date=1991 |title=Murray Walker's Grand Prix Year |publisher=Hazleton Publishing |pages=8–20 |isbn=0-905138-90-2}}</ref>
Jordan had signed veteran Italian driver [[Andrea de Cesaris]], plus last season's Coloni driver [[Bertrand Gachot]], who had much experience in pre-qualifying sessions. Their car was the all-new [[Jordan 191|191]] powered by a [[Cosworth]] V8 engine. Modena's drivers were Italian [[Nicola Larini]], another driver well used to pre-qualifying, and Belgian debutant [[Eric van de Poele]]. They would be driving the [[Lamborghini V12]]-engined [[Lambo 291]], so named for the team's strong [[Lamborghini]] connections.<ref name="Walker" /> Fondmetal had retained the French Osella driver [[Olivier Grouillard]], and were starting the season with the Cosworth V8-powered [[Osella FA1M|Fondmetal FA1M-E]], effectively last year's Osella, which itself was an update of their 1989 car.<ref name="Hodges">{{cite book |last=Hodges |first=David |date=2001 |title=A–Z of Grand Prix Cars |publisher=Crowood Press |pages=8–20 |isbn=1-86126-339-2}}</ref> Coloni had brought the [[Coloni C4|C4]], a modified version of the [[Coloni C3|C3]] used in 1989 and 1990,<ref name="Hodges" /> which also had a Cosworth V8 engine. Their driver was the 1990 [[British Formula 3000]] champion [[Pedro Chaves]], from Portugal. Scuderia Italia were campaigning a [[Dallara]] chassis as usual, the all-new [[Dallara F191|F191]], powered by [[Judd (engine)|Judd]] V10 engines. The team retained Italian [[Emanuele Pirro]], and hired Finnish driver [[JJ Lehto]], who had driven for [[Onyx (racing team)|Onyx]] in 1990.<ref name="Walker" />
In pre-qualifying in Phoenix, the Dallaras were easily the fastest cars in the session, with Pirro half a second faster than Lehto. Nearly two seconds slower in third was Larini in the Modena Lambo, and the fourth pre-qualifier was Gachot in the Jordan. Missing out in fifth place was de Cesaris in the other Jordan, who made a gear selection error on a faster lap, just ahead of Chaves, who crashed the Coloni during the session. Grouillard was seventh in the Fondmetal, complaining of a lack of grip, but bottom of the time sheets, nearly five seconds adrift of Grouillard, was van de Poele in the other Lambo. The Belgian had encountered a protester on the track during one run, after which his engine failed.<ref name="Walker" />
===Pre-qualifying classification===
{| class="wikitable sortable" style="font-size: 95%;"
|-
! Pos !! No !! Driver !! Constructor !! Time !! Gap
|-
! 1
| 21
| {{flagicon|Italy}} [[Emanuele Pirro]]
| [[Dallara]]-[[Judd (engine)|Judd]]
| 1:28.288
|
|-
! 2
| 22
| {{flagicon|Finland}} [[JJ Lehto]]
| [[Dallara]]-[[Judd (engine)|Judd]]
| 1:28.792
| +0.504
|-
! 3
| 34
| {{flagicon|Italy}} [[Nicola Larini]]
| [[Modena (racing team)|Lambo]]-[[Lamborghini]]
| 1:30.244
| +1.956
|-
! 4
| 32
| {{flagicon|Belgium}} [[Bertrand Gachot]]
| [[Jordan Grand Prix|Jordan]]-[[Ford Motor Company|Ford]]
| 1:30.304
| +2.016
|-
! 5
| 33
| {{flagicon|Italy}} [[Andrea de Cesaris]]
| [[Jordan Grand Prix|Jordan]]-[[Ford Motor Company|Ford]]
| 1:30.937
| +2.649
|-
! 6
| 31
| {{flagicon|Portugal}} [[Pedro Chaves]]
| [[Scuderia Coloni|Coloni]]-[[Ford Motor Company|Ford]]
| 1:31.113
| +2.825
|-
! 7
| 14
| {{flagicon|France}} [[Olivier Grouillard]]
| [[Fondmetal]]-[[Ford Motor Company|Ford]]
| 1:32.126
| +3.838
|-
! 8
| 35
| {{flagicon|Belgium}} [[Eric van de Poele]]
| [[Modena (racing team)|Lambo]]-[[Lamborghini]]
| 1:37.046
| +8.758
|}
===Qualifying report===
[[
Prior to arriving in Phoenix, the 1991 McLaren chassis had had only had one brief test session, and the two race cars were completed about 4 am Friday, six hours before the first practice session. Working to prepare the new car, [[Ayrton Senna]] claimed he had never gotten totally comfortable with the increasing complexity of the sport since helping [[Team Lotus|Lotus]] introduce the first active suspension car in [[1987 Formula One season|1987]], and he still found it hard to embrace the huge role of computers in achieving a proper setup. "Friday, to understand and interpret things properly, I worked with the engineers into the evening," Senna said. "It has been a long time since I did that. The engineers and I talked our way around the circuit, then we compared this with what the computer predicted. It was great because the computer confirmed almost everything, and it also showed where there was room for improvement."{{citation needed|date= October 2021}}
The [[Scuderia Ferrari|Ferraris]] of Alain Prost and [[Jean Alesi]] were expected to be the strongest team, but their V-12s and 7-speed semi-automatic gearboxes were not well suited to the tight turns and short straights of the street circuit. As it turned out, they were not the only ones plagued by gearbox problems throughout the race. To add insult to injury, Alesi, who had clinched the fastest time on Friday, ended his qualifying session clipping the tire barrier with his rear right wheel, ensuring he would qualify no higher than fifth place.{{citation needed|date= October 2021}}
===Qualifying classification===
{| class="wikitable sortable" style="font-size: 95%;"
|-
! Pos !! No !! Driver !! Constructor !! Q1 !! Q2 !! Gap
|-
! 1
| 1
| {{flagicon|Brazil|1968}} [[Ayrton Senna]]
| [[McLaren]]-[[Honda in Formula One|Honda]]
| 1:23.530
| '''1:21.434'''
|
|-
! 2
| 27
| {{flagicon|France}} [[Alain Prost]]
| [[Scuderia Ferrari|Ferrari]]
| 1:24.507
| '''1:22.555'''
| +1.121
|-
! 3
| 6
| {{flagicon|Italy}} [[Riccardo Patrese]]
| [[Williams Grand Prix Engineering|Williams]]-[[Renault in Formula One|Renault]]
| 1:24.726
| '''1:22.833'''
| +1.399
|-
! 4
| 5
| {{flagicon|UK}} [[Nigel Mansell]]
| [[Williams Grand Prix Engineering|Williams]]-[[Renault in Formula One|Renault]]
| 1:25.277
| '''1:23.218'''
| +1.784
|-
! 5
| 20
| {{flagicon|Brazil|1968}} [[Nelson Piquet]]
| [[Benetton Formula|Benetton]]-[[Ford Motor Company|Ford]]
| 1:25.026
| '''1:23.384'''
| +1.950
|-
! 6
| 28
| {{flagicon|France}} [[Jean Alesi]]
| [[Scuderia Ferrari|Ferrari]]
| '''1:23.519'''
| 1:23.805
| +2.085
|-
! 7
| 2
| {{flagicon|Austria}} [[Gerhard Berger]]
| [[McLaren]]-[[Honda in Formula One|Honda]]
| 1:25.914
| '''1:23.742'''
| +2.308
|-
! 8
| 19
| {{flagicon|Brazil|1968}} [[Roberto Moreno]]
| [[Benetton Formula|Benetton]]-[[Ford Motor Company|Ford]]
| 1:25.170
| '''1:23.881'''
| +2.447
|-
! 9
| 21
| {{flagicon|Italy}} [[Emanuele Pirro]]
| [[Dallara]]-[[Judd (engine)|Judd]]
| 1:24.876
| '''1:24.792'''
| +3.358
|-
! 10
| 22
| {{flagicon|Finland}} [[JJ Lehto]]
| [[Dallara]]-[[Judd (engine)|Judd]]
| 1:26.765
| '''1:24.891'''
| +3.457
|-
! 11
| 4
| {{flagicon|Italy}} [[Stefano Modena]]
| [[Tyrrell Racing|Tyrrell]]-[[Honda in Formula One|Honda]]
| '''1:25.065'''
| 1:25.557
| +3.631
|-
! 12
| 7
| {{flagicon|UK}} [[Martin Brundle]]
| [[Brabham]]-[[Yamaha Motor Company|Yamaha]]
| 1:27.184
| '''1:25.385'''
| +3.951
|-
! 13
| 11
| {{flagicon|Finland}} [[Mika Häkkinen]]
| [[Team Lotus|Lotus]]-[[Judd (engine)|Judd]]
| 1:27.976
| '''1:25.448'''
| +4.014
|-
! 14
| 32
| {{flagicon|Belgium}} [[Bertrand Gachot]]
| [[Jordan Grand Prix|Jordan]]-[[Ford Motor Company|Ford]]
| 1:27.568
| '''1:25.701'''
| +4.267
|-
! 15
| 23
| {{flagicon|Italy}} [[Pierluigi Martini]]
| [[Minardi]]-[[Scuderia Ferrari|Ferrari]]
| 1:25.815
| '''1:25.715'''
| +4.281
|-
! 16
| 3
| {{flagicon|Japan|1947}} [[Satoru Nakajima]]
| [[Tyrrell Racing|Tyrrell]]-[[Honda in Formula One|Honda]]
| 1:26.058
| '''1:25.752'''
| +4.318
|-
! 17
| 34
| {{flagicon|Italy}} [[Nicola Larini]]
| [[Modena (racing team)|Lambo]]-[[Lamborghini]]
| 1:27.761
| '''1:25.791'''
| +4.357
|-
! 18
| 16
| {{flagicon|Italy}} [[Ivan Capelli]]
| [[Leyton House Racing|Leyton House]]-[[Ilmor]]
| 1:54.845
| '''1:26.121'''
| +4.687
|-
! 19
| 29
| {{flagicon|France}} [[Éric Bernard]]
| [[Lola Cars|Lola]]-[[Ford Motor Company|Ford]]
| 1:27.446
| '''1:26.425'''
| +4.991
|-
! 20
| 25
| {{flagicon|Belgium}} [[Thierry Boutsen]]
| [[Equipe Ligier|Ligier]]-[[Lamborghini]]
| 1:27.984
| '''1:26.500'''
| +5.066
|-
! 21
| 30
| {{flagicon|Japan|1947}} [[Aguri Suzuki]]
| [[Lola Cars|Lola]]-[[Ford Motor Company|Ford]]
| 1:26.987
| '''1:26.548'''
| +5.114
|-
! 22
| 17
| {{flagicon|Italy}} [[Gabriele Tarquini]]
| [[Automobiles Gonfaronnaises Sportives|AGS]]-[[Ford Motor Company|Ford]]
| 1:27.164
| '''1:26.851'''
| +5.417
|-
! 23
| 15
| {{flagicon|Brazil|1968}} [[Maurício Gugelmin]]
| [[Leyton House Racing|Leyton House]]-[[Ilmor]]
| '''1:26.865'''
| 1:26.875
| +5.431
|-
! 24
| 8
| {{flagicon|UK}} [[Mark Blundell]]
| [[Brabham]]-[[Yamaha Motor Company|Yamaha]]
| 1:30.061
| '''1:26.915'''
| +5.481
|-
! 25
| 9
| {{flagicon|Italy}} [[Michele Alboreto]]
| [[Footwork Arrows|Footwork]]-[[Porsche in motorsport#Formula One|Porsche]]
| 1:29.067
| '''1:27.015'''
| +5.581
|-
! 26
| 24
| {{flagicon|Italy}} [[Gianni Morbidelli]]
| [[Minardi]]-[[Scuderia Ferrari|Ferrari]]
| 1:27.625
| '''1:27.042'''
| +5.608
|-
! 27
| 26
| {{flagicon|France}} [[Érik Comas]]
| [[Equipe Ligier|Ligier]]-[[Lamborghini]]
| 1:28.904
| '''1:27.159'''
| +5.725
|-
! 28
| 10
| {{flagicon|Italy}} [[Alex Caffi]]
| [[Footwork Arrows|Footwork]]-[[Porsche in motorsport#Formula One|Porsche]]
| 1:29.388
| '''1:27.519'''
| +6.085
|-
! 29
| 18
| {{flagicon|Sweden}} [[Stefan Johansson]]
| [[Automobiles Gonfaronnaises Sportives|AGS]]-[[Ford Motor Company|Ford]]
| 1:29.857
| '''1:27.753'''
| +6.319
|-
! 30
| 12
| {{flagicon|UK}} [[Julian Bailey (racing driver)|Julian Bailey]]
| [[Team Lotus|Lotus]]-[[Judd (engine)|Judd]]
| 1:30.758
| '''1:28.570'''
| +7.136
|}
==Race==
===Race report===
[[File:Start 1991 USA.jpg|thumb|left|The start of the race, with [[Ayrton Senna]] leading the field.]]
On Sunday, Prost began his second season at Ferrari alongside Senna on the front row. At the start, he fell in behind the Brazilian, with [[Nigel Mansell]] slipping ahead of [[Riccardo Patrese]]. Alesi and [[Gerhard Berger]] followed, then [[Nelson Piquet]], [[Roberto Moreno]], [[Stefano Modena]] and [[Emanuele Pirro]]. A lap later, Alesi, in his first race for Ferrari, swept past Patrese, but by then Senna was pulling away. After ten laps, he had a lead of ten seconds over Prost.{{citation needed|date= October 2021}}
Behind Senna, Patrese was involved in two successive three-way battles. First, after getting back by Alesi for fourth on lap 16, Patrese closed on Mansell who was immediately behind Prost. By lap 22, Patrese was close enough to attack his [[WilliamsF1|Williams]] team-mate but overshot onto the escape road, as Mansell swerved to avoid him. Upon rejoining, Patrese quickly latched onto Alesi and Berger, as the new three-car train now covered fourth through sixth places. Patrese had gotten past Berger when, suddenly, two of the top six runners retired on consecutive laps. On lap 35, Mansell pulled over when the Williams's new semi-automatic gearbox failed, and on the next time around, Berger's race ended as well.{{citation needed|date= October 2021}}
[[File:Jean alesi 1991.jpg|thumb|right|Prost's teammate [[Jean Alesi]] is pursued by [[Riccardo Patrese]] in the [[Williams FW14]].]]
[[File:Ayrton Senna 1991 USA 3.jpg|thumb|right|[[Ayrton Senna]] took a comfortable win in his [[McLaren MP4/6]].]]
Patrese passed Alesi for the second time, and Alesi pitted for new [[Goodyear Tire and Rubber Company|Goodyear]] tires on lap 43. He rejoined in seventh. Three laps later, Prost was being hounded by Patrese, and he also pitted, ceding second spot to the Williams. When the Ferrari crew had problems changing his right rear tire, the Frenchman dropped to seventh behind Modena's [[Tyrrell Racing|Tyrrell]]-Honda.{{citation needed|date= October 2021}}
On lap 48, Senna pitted without giving up the lead. Like Mansell, Patrese was having problems with the gearbox in his Williams, and when it selected neutral midway through Turn Seven, it caused him to spin out of second place. The car stopped on the outside of the track, perpendicular to the racing line. Piquet and [[Mika Häkkinen]] (making his F1 debut) barely managed to avoid him as they passed, but before Patrese could get out of the car, Moreno, in the second Benetton, went straight across the bow of the Williams, removing the nose of Patrese's car and the right front wheel of the Benetton. Neither driver was injured. Patrese and Moreno's cars remained on the course throughout the race, and [[Bertrand Gachot]], driving the first race for the new [[Jordan Grand Prix|Jordan team]] and challenging [[Satoru Nakajima]], spun later after swerving to avoid them.{{citation needed|date= October 2021}}
[[File:Bertrand Gachot 1991 USA.jpg|thumb|right|The race marked the debut of the [[Jordan Grand Prix|Jordan]] team in F1. [[Bertrand Gachot]] was classified tenth after a late-race engine failure prevented him from finishing.]]
With Patrese out, Senna led Piquet, who was having to hold off Alesi, by over a minute. Alesi squeezed up to second on lap 53, while four laps later Prost disposed of Modena. Then on lap 70, Prost went from fourth to second in one move at turn five. With Alesi and Piquet running second and third, Piquet's [[Benetton Formula|Benetton]] pulled alongside Alesi– who had set the race's fastest lap while Prost was in the pits– in Turn Four, but could not get by. Down the straight, however, Piquet passed Alesi for second place. Prost also went by his new teammate on the left, and then sliced back to the right, between Alesi and Piquet, beating Piquet to the apex of Turn Five and regaining second place. By now Senna led by 40 seconds.{{citation needed|date= October 2021}}
Gearbox troubles dropped Alesi to fifth before he retired less than 10 laps from the finish, leaving third place to Piquet who, like the two Tyrrells following, had never pitted for tires. Martini was pressing [[Satoru Nakajima]] for fifth, only to have his engine let go after 75 laps. A similar problem removed Gachot from eighth on the same lap, promoting [[Aguri Suzuki]] to sixth. The race ended a lap short of the planned 82 as the two-hour limit was reached, Senna taking the win having led every lap.{{citation needed|date= October 2021}}
After the race, Senna assessed his new car's performance: "I had small problems with the gearbox, and the car balance was not optimum, so it was very difficult to drive. I'm looking forward to running a proper circuit with proper conditions and see what the car can do."{{citation needed|date= October 2021}}
===Race classification===
{| class="wikitable" style="font-size: 95%;"
|-
! Pos !! No !! Driver !!
|-
! 1
| 1
| {{flagicon|Brazil|1968}} '''[[Ayrton Senna]]'''
| '''[[McLaren]]-[[Honda
| {{Goodyear}}
| 81
| 2
| 1
| '''10'''
Line 84 ⟶ 403:
| {{flagicon|France}} '''[[Alain Prost]]'''
| '''[[Scuderia Ferrari|Ferrari]]'''
| {{Goodyear}}
| 81
| + 16.322
| 2
| '''6'''
Line 91 ⟶ 411:
! 3
| 20
| {{flagicon|Brazil|1968}} '''[[Nelson Piquet]]'''
| '''[[Benetton Formula|Benetton]]-[[
| {{Pirelli}}
| 81
| +
| 5
| '''4'''
Line 101 ⟶ 422:
| 4
| {{flagicon|Italy}} '''[[Stefano Modena]]'''
| '''[[Tyrrell Racing|Tyrrell]]-[[Honda
| {{Pirelli}}
| 81
| +
| 11
| '''3'''
Line 109 ⟶ 431:
! 5
| 3
| {{flagicon|Japan|1947}} '''[[Satoru Nakajima]]'''
| '''[[Tyrrell Racing|Tyrrell]]-[[Honda
| {{Pirelli}}
| 80
| + 1
| 16
| '''2'''
Line 118 ⟶ 441:
! 6
| 30
| {{flagicon|Japan|1947}} '''[[Aguri Suzuki]]'''
| '''[[
| {{Goodyear}}
| 79
| + 2
| 21
| '''1'''
Line 129 ⟶ 453:
| {{flagicon|Italy}} [[Nicola Larini]]
| [[Modena (racing team)|Lambo]]-[[Lamborghini]]
| {{Goodyear}}
| 78
| + 3
| 17
|
|-
! 8
| 17
| {{flagicon|Italy}} [[Gabriele Tarquini]]
| [[Automobiles Gonfaronnaises Sportives|AGS]]-[[
| {{Goodyear}}
| 77
| + 4
| 22
|
|-
! 9
Line 147 ⟶ 473:
| {{flagicon|Italy}} [[Pierluigi Martini]]
| [[Minardi]]-[[Scuderia Ferrari|Ferrari]]
| {{Goodyear}}
| 75
| Engine
| 15
|
|-
! 10
| 32
| {{flagicon|Belgium}} [[Bertrand Gachot]]
| [[Jordan Grand Prix|Jordan]]-[[
| {{Goodyear}}
| 75
| Engine
| 14
|
|-
! 11
| 7
| {{flagicon|UK}} [[Martin Brundle]]
| [[Brabham]]-[[Yamaha Motor
| {{Pirelli}}
| 73
| + 8
| 12
|
|-
! 12
Line 174 ⟶ 503:
| {{flagicon|France}} [[Jean Alesi]]
| [[Scuderia Ferrari|Ferrari]]
| {{Goodyear}}
| 72
| Gearbox
| 6
|
|-
!
| 11
| {{flagicon|Finland}} [[Mika Häkkinen]]
| [[Team Lotus|Lotus]]-[[Judd (engine)|Judd]]
| {{Goodyear}}
| 59
| Engine
| 13
|
|-
! Ret
| 6
| {{flagicon|Italy}} [[Riccardo Patrese]]
| [[
| {{Goodyear}}
| 49
| Gearbox
| 3
|
|-
! Ret
| 19
| {{flagicon|Brazil|1968}} [[Roberto Moreno]]
| [[Benetton Formula|Benetton]]-[[
| {{Pirelli}}
| 49
| Collision
| 8
|
|-
! Ret
| 9
| {{flagicon|Italy}} [[Michele Alboreto]]
| [[Footwork Arrows|Footwork]]-[[Porsche in motorsport#Formula One|Porsche]]
| {{Goodyear}}
| 41
| Engine
| 25
|
|-
! Ret
| 16
| {{flagicon|Italy}} [[Ivan Capelli]]
| [[Leyton House Racing|Leyton House]]-[[Ilmor]]
| {{Goodyear}}
| 40
| Gearbox
| 18
|
|-
! Ret
| 25
| {{flagicon|Belgium}} [[Thierry Boutsen]]
| [[Equipe Ligier|Ligier]]-[[Lamborghini]]
| {{Goodyear}}
| 40
| Engine
| 20
|
|-
! Ret
| 2
| {{flagicon|Austria}} [[Gerhard Berger]]
| [[McLaren]]-[[Honda
| {{Goodyear}}
| 36
| Fuel
| 7
|
|-
! Ret
| 5
| {{flagicon|UK}} [[Nigel Mansell]]
| [[
| {{Goodyear}}
| 35
| Gearbox
| 4
|
|-
! Ret
| 15
| {{flagicon|Brazil|1968}} [[
| [[Leyton House Racing|Leyton House]]-[[Ilmor]]
| {{Goodyear}}
| 34
| Gearbox
| 23
|
|-
! Ret
| 8
| {{flagicon|UK}} [[Mark Blundell]]
| [[Brabham]]-[[Yamaha Motor
| {{Pirelli}}
| 32
| Spun
| 24
|
|-
! Ret
Line 273 ⟶ 613:
| {{flagicon|Italy}} [[Emanuele Pirro]]
| [[Dallara]]-[[Judd (engine)|Judd]]
| {{Pirelli}}
| 16
| Gearbox
| 9
|
|-
! Ret
Line 282 ⟶ 623:
| {{flagicon|Italy}} [[Gianni Morbidelli]]
| [[Minardi]]-[[Scuderia Ferrari|Ferrari]]
| {{Goodyear}}
| 15
| Gearbox
| 26
|
|-
! Ret
| 22
| {{flagicon|Finland}} [[
| [[Dallara]]-[[Judd (engine)|Judd]]
| {{Pirelli}}
| 12
| Gearbox
| 10
|
|-
! Ret
| 29
| {{flagicon|France}} [[Éric Bernard]]
| [[
| {{Goodyear}}
| 4
| Engine
| 19
|
|-
! DNQ
| 26
| {{flagicon|France}} [[Érik Comas]]
| [[Equipe Ligier|Ligier]]-[[Lamborghini]]
| {{Goodyear}}
|
|
|
|
|-
! DNQ
| 10
| {{flagicon|Italy}} [[Alex Caffi]]
| [[Footwork Arrows|Footwork]]-[[Porsche in motorsport#Formula One|Porsche]]
| {{Goodyear}}
|
|
|
|
|-
! DNQ
| 18
| {{flagicon|Sweden}} [[Stefan Johansson]]
| [[Automobiles Gonfaronnaises Sportives|AGS]]-[[
| {{Goodyear}}
|
|
|
|
|-
! DNQ
| 12
| {{flagicon|UK}} [[Julian Bailey (racing driver)|Julian Bailey]]
| [[Team Lotus|Lotus]]-[[Judd (engine)|Judd]]
| {{Goodyear}}
|
|
|
|
|-
! DNPQ
| 33
| {{flagicon|Italy}} [[Andrea de Cesaris]]
| [[Jordan Grand Prix|Jordan]]-[[
| {{Goodyear}}
|
|
|
|
|-
! DNPQ
| 31
| {{flagicon|Portugal}} [[Pedro Chaves]]
| [[
| {{Goodyear}}
|
|
|
|
|-
! DNPQ
| 14
| {{flagicon|France}} [[Olivier Grouillard]]
| [[Fondmetal]]-[[
| {{Goodyear}}
|
|
|
|
|-
! DNPQ
Line 372 ⟶ 723:
| {{flagicon|Belgium}} [[Eric van de Poele]]
| [[Modena (racing team)|Lambo]]-[[Lamborghini]]
| {{Goodyear}}
|
|
|
|
|-
!colspan="9"|{{center|Source:<ref name="formula1.com">{{cite web |url=http://www.formula1.com/results/season/1991/199/ |title=1991 United States Grand Prix |publisher=formula1.com |access-date=23 December 2015 |archive-url=https://web.archive.org/web/20150218175802/http://www.formula1.com/results/season/1991/199/ |archive-date=18 February 2015}}</ref><ref>{{Cite web|url=https://gparchive.com/formula-1/1991-united-states-grand-prix/|title=1991 United States Grand Prix - Race Results & History - GP Archive|website=GPArchive.com|date=10 March 1991 |access-date=27 November 2021}}</ref>}}
|}
==Championship standings after the race==
{{col-begin}}
{{col-2}}
;Drivers' Championship standings
{| class="wikitable" style="font-size: 95%;"
|-
!Pos
!Driver
!Points
|-
| 1
| {{flagicon|BRA|1968}} [[Ayrton Senna]]
| style="text-align:right;"| 10
|-
| 2
| {{flagicon|FRA}} [[Alain Prost]]
| style="text-align:right;"| 6
|-
| 3
| {{flagicon|BRA|1968}} [[Nelson Piquet]]
| style="text-align:right;"| 4
|-
| 4
| {{flagicon|ITA}} [[Stefano Modena]]
| style="text-align:right;"| 3
|-
| 5
| {{flagicon|JPN|1947}} [[Satoru Nakajima]]
| style="text-align:right;"| 2
|-
!colspan=4|Source:<ref name="Championship">{{Cite web|url=https://www.statsf1.com/en/1991/etats-unis/championnat.aspx|title=United States 1991 - Championship • STATS F1|website=www.statsf1.com|access-date=21 March 2019}}</ref>
|}
{{col-2}}
;Constructors' Championship standings
{|class="wikitable" style="font-size: 95%;"
|-
! Pos
! Constructor
! Points
|-
| 1
| {{flagicon|GBR}} [[McLaren]]-[[Honda in Formula One|Honda]]
| style="text-align:right;"|10
|-
| 2
| {{flagicon|ITA}} [[Scuderia Ferrari|Ferrari]]
| style="text-align:right;"|6
|-
| 3
| {{flagicon|GBR}} [[Tyrrell Racing|Tyrrell]]-[[Honda in Formula One|Honda]]
| style="text-align:right;"|5
|-
| 4
| {{flagicon|GBR}} [[Benetton Formula|Benetton]]-[[Ford Motor Company|Ford]]
| style="text-align:right;"|4
|-
| 5
| {{flagicon|GBR}} [[Lola Cars|Lola]]-[[Ford Motor Company|Ford]]
| style="text-align:right;"|1
|-
!colspan=4|Source:<ref name="Championship"/>
|}
{{col-end}}
*{{small|'''Note''': Only the top five positions are included for both sets of standings.}}
==References==
* Dennis Simanaitis (June, 1991). "3rd United States Grand Prix at Phoenix: More Power To Ya". ''Road & Track'',
* "Formula One Phoenix Grand Prix" Video (1992), ''BMG Video'', New York.
{{reflist}}
==External links==
{{commons category}}
* [https://web.archive.org/web/20000819080556/http://sportsillustrated.cnn.com/centurys_best/news/1999/06/03/flashback_phoenix/index.html Sports Illustrated-1991 USGP] (archived)
* [http://www.grandprix.com/gpe/rr501.html GrandPrix.com Race Report]
{{F1 race report
|Name_of_race = [[
|Year_of_race = 1991
|Previous_race_in_season = [[1990 Australian Grand Prix]]
|Next_race_in_season = [[1991 Brazilian Grand Prix]]
|Previous_year's_race = [[1990 United States Grand Prix]]
|Next_year's_race = [[2000 United States Grand Prix]]}}
{{F1GP 90-99}}
{{Coord|33|26|53|N|112|04|29|W|region:US-AZ_type:event|display=title}}
<!--Please don't classify by broadcaster as it is shown by many broadcasters around the world. Which channel it happens to be broadcast on is not one of its defining characteristics. Classifying under all of them would be category clutter, and categorizing it under an American channel only is U.S. centric.-->
[[Category:1991 Formula One races|United States Grand Prix]]
[[
[[Category:1991 in American motorsport|Grand Prix]]
[[Category:1991 in sports in Arizona]]
[[Category:1990s in Phoenix, Arizona]]
[[Category:March 1991 sports events in the United States]]
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