In temperatures around 100degF, Bourdais clocked a 70.913sec lap of the 1.9680-mile track, shading teammate Alex Lynn by a mere 0.077sec on his 47th of 50 laps.
Pipo Derani, this morning’s pacesetter, ensured a Cadillac 1-2-3 as the Action Express Racing car claimed third ahead of Tom Blomqvist in the faster of the two Acura ARX-05s. Blomqvist was only 0.13sec off the top spot, and 0.15sec ahead of the second Acura of Filipe Albuquerque, while Tristan Vautier in the slowest of the DPi cars was still within 0.4sec of P1.
Unlike this morning, the all-Pro cars took charge of the 21-car GT field, as Mathieu Jaminet slotted the Pfaff Porsche 911 GT3 R into the top spot on his final flyer, edging Connor De Phillippi in the Rahal Letterman Lanigan-run BMW M4 by thousandths.
Jordan Taylor actually matched De Phillippi’s time to the thousandth in the Corvette C8.R, while Raffaele Marciello continued to impress in his first event in the WeatherTech Racing Mercedes AMG GT3.
Frederik Schandorff topped the GTD field in the McLaren 720S ahead of Mike Skeen’s Mercedes, Robby Foley’s Turner Motorsports BMW, and Alex Riberas who set the pace this morning in the Heart of Racing Aston Martin Vantage.
Unlike this morning, there were no red flags.
Qualifying begins at 5.10pm local (Pacific) time.
| Cla | Driver | Class | Chassis | Laps | Time | Gap |
|---|---|---|---|---|---|---|
| 1 |
 Renger van der Zande  Sébastien Bourdais
| DPi | Cadillac DPi | 50 | 1'10.913 | |
| 2 |
 Earl Bamber  Alex Lynn
| DPi | Cadillac DPi | 44 | 1'10.990 | 0.077 |
| 3 |
 Pipo Derani  Tristan Nunez
| DPi | Cadillac DPi | 50 | 1'11.005 | 0.092 |
| 4 |
Oliver Jarvis Tom Blomqvist
| DPi | Acura DPi | 56 | 1'11.043 | 0.130 |
| 5 |
Ricky Taylor  Filipe Albuquerque
| DPi | Acura DPi | 50 | 1'11.195 | 0.282 |
| 6 |
Tristan Vautier Richard Westbrook
| DPi | Cadillac DPi | 51 | 1'11.303 | 0.390 |
| 7 |
 Matt Campbell Mathieu Jaminet
| GTD PRO | Porsche 911 GT3 R | 43 | 1'18.874 | 7.961 |
| 8 |
Connor de Phillippi John Edwards
| GTD PRO | BMW M4 GT3 | 37 | 1'18.915 | 8.002 |
| 9 |
 Antonio Garcia Jordan Taylor
| GTD PRO | Corvette C8.R GTD | 50 | 1'18.915 | 8.002 |
| 10 |
Cooper MacNeil  Raffaele Marciello
| GTD PRO | Mercedes-AMG GT3 | 46 | 1'19.096 | 8.183 |
| 11 |
Brendan Iribe  Frederik Schandorff
| GTD | McLaren 720S GT3 | 50 | 1'19.490 | 8.577 |
| 12 |
Mike Skeen Stevan McAleer
| GTD | Mercedes-AMG GT3 | 50 | 1'19.543 | 8.630 |
| 13 |
Robby Foley Bill Auberlen
| GTD | BMW M4 GT3 | 48 | 1'19.624 | 8.711 |
| 14 |
Ross Gunn Alex Riberas
| GTD PRO | Aston Martin Vantage GT3 | 52 | 1'19.829 | 8.916 |
| 15 |
Bryan Sellers Madison Snow
| GTD | BMW M4 GT3 | 40 | 1'19.844 | 8.931 |
| 16 |
Jack Hawksworth Ben Barnicoat
| GTD PRO | Lexus RC F GT3 | 25 | 1'19.927 | 9.014 |
| 17 |
 Roman De Angelis  Maxime Martin
| GTD | Aston Martin Vantage GT3 | 59 | 1'19.973 | 9.060 |
| 18 |
Frankie Montecalvo Aaron Telitz
| GTD | Lexus RC F GT3 | 49 | 1'19.979 | 9.066 |
| 19 |
 Mario Farnbacher Marc Miller
| GTD | Acura NSX GT3 | 32 | 1'20.014 | 9.101 |
| 20 |
Ryan Hardwick Jan Heylen
| GTD | Porsche 911 GT3 R | 53 | 1'20.232 | 9.319 |
| 21 |
Jon Miller Paul Holton
| GTD | McLaren 720S GT3 | 51 | 1'20.253 | 9.340 |
| 22 |
Robert Megennis Jeff Westphal
| GTD | Lamborghini Huracan GT3 | 52 | 1'20.524 | 9.611 |
| 23 |
Rob Ferriol Katherine Legge
| GTD | Porsche 911 GT3 R | 51 | 1'20.570 | 9.657 |
| 24 |
Ryan Eversley Aidan Read
| GTD | Acura NSX GT3 | 50 | 1'20.895 | 9.982 |
| 25 |
Russell Ward Philip Ellis
| GTD | Mercedes-AMG GT3 | 5 | 1'21.085 | 10.172 |
| 26 |
Kyle Washington James Sofronas
| GTD | Porsche 911 GT3 R | 49 | 1'21.642 | 10.729 |
| View full results | ||||||
