There were three practice sessions preceding the start of the race on Saturday, two on Friday and one on Saturday. The first two one-hour sessions were on Friday morning and afternoon. The third on Saturday morning lasted an hour.[15]
Practice 1
The first practice session took place at 11:05 am ET on Friday and ended with Stephen Simpson topping the charts for JDC-Miller MotorSports, with a lap time of 1:35.491.[16]
The second practice session took place at 3:30 pm ET on Friday and ended with Pipo Derani topping the charts for Tequila Patrón ESM, with a lap time of 1:34.696.[18]
The third and final practice session took place at 8:00 am ET on Saturday and ended with Olivier Pla topping the charts for PR1/Mathiasen Motorsports, with a lap time of 1:48.566.[20]
In Saturday afternoon's 90-minute four-group qualifying, each category had separate 15-minute sessions. Regulations stipulated that teams nominate one qualifying driver, with the fastest laps determining each class' starting order. IMSA arranged the grid to put Prototypes ahead of the PC, GTLM and GTD cars.[22][15]
The third session of qualifying was for cars in the PC class. James French set the fastest time driving the #38 Performance Tech Motorsports entry.[25]
1 The No. 26 BAR1 Motorsports entry was moved to the back of the PC field as per Articles 43.5 and 43.6 of the Sporting regulations (Change of starting driver) and (Change of starting tires).[22]
2 The No. 14 3GT Racing entry was moved to the back of the GTD field as per Article 43.6 of the Sporting regulations (Change of starting tires).[22]
3 The No. 54 CORE Autosport entry was moved to the back of the GTD field as per Article 43.6 of the Sporting regulations (Change of starting tires).[22]
Race
Post-race
The result kept Jordan Taylor and Ricky Taylor atop the Prototype Drivers' Championship. Goikhberg and Simpson moved to third after being fourth coming into Watkins Glen.[30] In the PC Drivers' Championship, French and O'Ward extended their points lead to thirty points over Yount, while Yacamán advanced from seventh to fifth.[30] In the GTLM Drivers' Championship, Garcia and Magnussen further increased their gap to eighteen points ahead of Müller and Hand. Auberlen and Sims advanced from fourth to third while Pilet and Werner dropped to fifth. By finishing second in GTD, Balzan and Nielsen took the lead of the GTD Drivers' Championship while Lally and Legge moved from sixth to third.[30] Cadillac, Chevrolet, and Mercedes-AMG continued to top their respective Manufacturers' Championships, while Wayne Taylor Racing, Performance Tech Motorsports, and Corvette Racing kept their respective advantages in the Teams' Championships with six rounds remaining.[30] Scuderia Corsa took the lead of the GTD Teams' Championship going into the next race at Canadian Tire Motorsports Park.[30]
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