2018 SportsCar Grand Prix

[1] It was the fifth consecutive year the event was held as part of the WeatherTech SportsCar Championship and the thirty-sixth annual running of the race.

[2] With 147 points, the GTLM Drivers' Championship was led by Joey Hand and Dirk Müller with a one-point advantage over Ryan Briscoe and Richard Westbrook.

[5] Tequila Patrón ESM scaled down to a single entry due to a lack of spare engines following the previous round at Watkins Glen.

Scuderia Corsa scaled down to a single entry while the #16 Wright Motorsports made its since appearance since Belle Isle.

[8] The first practice session took place at 11:30 am ET on Friday and ended with Colin Braun topping the charts for CORE Autosport, with a lap time of 1:07.155.

[11] The second practice session took place at 3:50 pm ET on Friday and ended with Colin Braun topping the charts for CORE Autosport, with a lap time of 1:06.902.

[13] The third and final practice session took place at 8:30 am ET on Saturday and ended with Colin Braun topping the charts for CORE Autosport, with a lap time of 1:06.712.

The competitors' fastest lap times determined the starting order with the grid arranged to put the Prototype and GTLM cars ahead of all GTD entries.

As a result of winning the race, Bennett and Braun moved from seventh to fourth in the Prototype Divers' Championship.

Colin Braun Renger van der Zande Eric Curran Christian Fittipaldi Ricky Taylor Tristan Nunez Stephen Simpson Simon Trummer Gustavo Yacamán Richard Westbrook Jan Magnussen Tommy Milner Nick Tandy Dirk Müller Laurens Vanthoor Alexander Sims Juan Pablo Montoya Ben Keating Kyle Marcelli Andy Lally Madison Snow Álvaro Parente Lawson Aschenbach David Heinemeier Hansson Harry Tincknell Cooper MacNeil Christina Nielsen