2023 Chevrolet Grand Prix

International Motor Sports Association's (IMSA) president John Doonan confirmed the race was part of the schedule for the 2023 IMSA SportsCar Championship (IMSA SCC) in August 2022.^[1] It was the eighth year the event was held as part of the WeatherTech SportsCar Championship and the fortieth annual running of the race.^[1] The 2023 Chevrolet Grand Prix was the sixth of eleven scheduled sports car races of 2023 by IMSA, and the third of seven races of the WeatherTech Sprint Cup.^[2] The race was held at the ten-turn 2.459 mi (3.957 km) Canadian Tire Motorsports Park on July 9, 2023.^[2]

After the Sahlen's Six Hours of The Glen two weeks earlier, Pipo Derani and Alexander Sims led the GTP Drivers' Championship with 1602 points, ahead of Connor De Phillippi and Nick Yelloly with 1583 points followed by Nick Tandy and Mathieu Jaminet with 1527 points.^[3] With 730 points, Josh Burdon, Felipe Fraga, and Gar Robinson led the LMP3 Drivers' Championship ahead of Wayne Boyd, Anthony Mantella, and Nicolás Varrone with 606 points.^[3] Ben Barnicoat and Jack Hawksworth led the GTD Pro Drivers' Championship with 1795 points ahead of Jules Gounon and Daniel Juncadella with 1682 points.^[3] In GTD, the Drivers' Championship was led by Bryan Sellers and Madison Snow with 1592 points, ahead of Frankie Montecalvo and Aaron Telitz with 1488 points.^[3] Cadillac, Lexus, and BMW were leading their respective Manufacturers' Championships, while Whelen Engineering Racing, Riley Motorsports, Vasser Sullivan Racing, and Paul Miller Racing each led their own Teams' Championships.^[3]

On July 4, 2023, IMSA released the latest technical bulletin outlining Balance of Performance for the GTP, GTD Pro, and GTD classes. In GTP, all of the cars received weight breaks. The Acura ran at 1046 kg, the BMW ran at 1031 kg, the Cadillac ran at 1030 kg, and the Porsche ran at 1037 kg. Maximum stint energy figures were also adjusted.^[4] In GTD Pro and GTD, the Acura, Corvette, McLaren, Mercedes, and Porsche received power increases as well as fuel capacity increases.^[5]

A total of 34 cars took part in the event split across four classes. 9 cars were entered in GTP, 6 in LMP3, 5 in GTD Pro, and 14 in GTD.^[6]

In LMP3, Andretti Autosport, Performance Tech Motorsports, MLT Motorsports, and JDC-Miller MotorSports were absent. Antoine Comeau and George Staikos shared the Ave Motorsports entry.^[7]

In GTD Pro, AF Corse, Risi Competizione and Iron Lynx were absent. In GTD, Triarsi Competizione, NTE Sport, Magnus Racing, Cetilar Racing, Iron Dames, and Racer's Edge Motorsports with WTR Andretti skipped.

There were two practice sessions preceding the start of the race on Sunday, one on Friday and one on Saturday. The first session lasted 90 minutes on Friday while the second session on Saturday lasted 105 minutes.^[8]

The first practice session took place at 2:50 pm ET on Friday and ended with Colin Braun topping the charts for Meyer Shank Racing with Curb-Agajanian, with a lap time of 1:07.341.^[9] The LMP3 class was topped by the #30 Jr III Motorsports Ligier JS P320 of Garett Grist with a time of 1:12.270.^[10] Antonio García was fastest in GTD Pro while Frankie Montecalvo set the fastest time amongst all GTD cars.^[11]

The second and final practice session took place at 8:00 am ET on Saturday and ended with Ricky Taylor topping the charts for Wayne Taylor Racing with Andretti Autosport, with a lap time of 1:05.870.^[14] Garett Grist set the fastest time in LMP3.^[15] The GTD Pro class was topped by the #14 Vasser Sullivan Racing Lexus RC F GT3 of Jack Hawksworth while Loris Spinelli was fastest in GTD.^[16]

Saturday's afternoon qualifying was broken into three sessions, with one session for the GTP, LMP3, and GTD Pro and GTD classes, which lasted for 20 minutes for the GTP session, and 15 minutes for the LMP3, and GTD Pro/GTD sessions.^[8] The rules dictated that all teams nominated a driver to qualify their cars, with the Pro-Am LMP3 class requiring a Bronze/Silver Rated driver to qualify the car. The competitors' fastest lap times determined the starting order. IMSA then arranged the grid to put GTPs ahead of the LMP3, GTD Pro, and GTD cars.^[19]

The first was cars in the GTD Pro and GTD classes. Jack Hawksworth qualified on pole in GTD Pro driving the No. 14 Vasser Sullivan Racing entry. Roman De Angelis qualified on pole in GTD driving the No. 27 Heart of Racing Team, besting Frankie Montecalvo in the No. 12 Vasser Sullivan Racing entry.^[20]

The second session of qualifying was for cars in the LMP3 class. Gar Robinson qualified on pole for the class driving the No. 74 car for Riley Motorsports, besting Orey Fidani in the No. 13 AWA entry.^[21]

The final session of qualifying was for the GTP class. Tom Blomqvist qualified on pole driving the No. 60 car for Meyer Shank Racing, beating Ricky Taylor in the No. 10 Wayne Taylor Racing with Andretti Autosport entry by less than one tenth of a second.^[22]

Pole positions in each class are indicated in bold and by ‡.

Pos.	Class	No.	Team	Driver	Time	Gap	Grid
1	GTP	60	Meyer Shank Racing with Curb-Agajanian	Tom Blomqvist	1:05.653	_	1‡
2	GTP	10	Wayne Taylor Racing with Andretti Autosport	Ricky Taylor	1:05.734	+0.071	2
3	GTP	31	Whelen Engineering Racing	Pipo Derani	1:05.829	+0.176	3
4	GTP	01	Cadillac Racing	Sébastien Bourdais	1:06.266	+0.613	4
5	GTP	7	Porsche Penske Motorsport	Felipe Nasr	1:06.521	+0.868	5
6	GTP	24	BMW M Team RLL	Augusto Farfus	1:06.801	+1.148	6
7	GTP	25	BMW M Team RLL	Nick Yelloly	1:06.848	+1.195	7
8	GTP	5	JDC-Miller MotorSports	Mike Rockenfeller	1:06.946	+1.293	8
9	GTP	6	Porsche Penske Motorsport	Mathieu Jaminet	1:07.329	+1.676	9
10	LMP3	74	Riley Motorsports	Gar Robinson	1:12.946	+7.293	10‡
11	LMP3	13	AWA	Orey Fidani	1:13.355	+7.702	11
12	LMP3	30	Jr III Motorsports	Ari Balogh	1:13.593	+7.940	12
13	LMP3	17	AWA	Anthony Mantella	1:13.682	+8.029	13
14	LMP3	4	Ave Motorsports	Antoine Comeau	1:13.884	+8.231	14
15	LMP3	33	Sean Creech Motorsport	Lance Willsey	1:14.751	+9.098	15
16	GTD Pro	14	Vasser Sullivan Racing	Jack Hawksworth	1:15.029	+9.376	16‡
17	GTD Pro	79	WeatherTech Racing	Jules Gounon	1:15.103	+9.450	17
18	GTD Pro	23	Heart of Racing Team	Alex Riberas	1:15.341	+9.688	18
19	GTD	27	Heart of Racing Team	Roman De Angelis	1:15.478	+9.825	19‡
20	GTD Pro	3	Corvette Racing	Jordan Taylor	1:15.494	+9.841	20
21	GTD	12	Vasser Sullivan Racing	Frankie Montecalvo	1:15.508	+9.855	341
22	GTD Pro	9	Pfaff Motorsports	Klaus Bachler	1:15.584	+9.931	21
23	GTD	1	Paul Miller Racing	Madison Snow	1:15.595	+9.941	22
24	GTD	32	Team Korthoff Motorsports	Mikaël Grenier	1:15.670	+10.017	23
25	GTD	96	Turner Motorsport	Patrick Gallagher	1:15.992	+10.339	24
26	GTD	78	Forte Racing powered by US RaceTronics	Misha Goikhberg	1:16.100	+10.447	25
27	GTD	57	Winward Racing	Russell Ward	1:16.165	+10.512	26
28	GTD	97	Turner Motorsport	Chandler Hull	1:16.196	+10.543	27
29	GTD	70	Inception Racing	Brendan Iribe	1:16.360	+10.707	28
30	GTD	80	AO Racing Team	P.J. Hyett	1:16.983	+11.330	29
31	GTD	77	Wright Motorsports	Alan Brynjolfsson	1:17.028	+11.375	30
32	GTD	91	Kelly-Moss with Riley	Alan Metni	1:17.126	+11.473	31
33	GTD	66	Gradient Racing	Sheena Monk	1:17.213	+11.560	32
34	GTD	92	Kelly-Moss with Riley	David Brule	1:20.469	+14.816	33
Sources:[23][24]

• ¹ The No. 12 Vasser Sullivan Racing entry initially qualified second for the GTD class. However, the team changed engines after qualifying. By IMSA rules, the entry was moved to the rear of the GTD field on the starting grid.