[1] It was the third consecutive year the event was held as part of the WeatherTech SportsCar Championship and the twenty-sixth annual running of the race.
[6] In GTD, Alex Job Racing returned after skipping the previous round at Canadian Tire Motorsport Park.
[11] The first practice session took place at 12:05 pm ET on Friday and ended with Dirk Müller topping the charts for Ford Chip Ganassi Racing, with a lap time of 51.077.
[13] The second and final practice session took place at 2:25 pm ET on Friday and ended with Gianmaria Bruni topping the charts for Porsche GT Team, with a lap time of 50.601.
Regulations stipulated that teams nominate one qualifying driver, with the fastest laps determining each class' starting order.
912 car for Porsche GT Team, besting Ryan Briscoe in the #67 Ford Chip Ganassi Racing entry.
[25] The result kept Balzan and Nielsen atop the GTD Drivers' Championship while Sellers and Snow advanced from sixth to fourth.