Finished 18th in GTD class season standings with wins at Canadian Tire Motorsport Park and Circuit of The Americas.
2015
Finished sixth in GTD championship standings with victories at Daytona, Road America and Circuit of The Americas.
2016
Finished second in GTD standings alongside co-driver Keating in No. 33 Dodge Viper with victories at Detroit, Road America and Michelin Raceway Road Atlanta.
2017
Won IMSA Michelin Endurance Cup title and finished second in GTD season standings in first year with new Mercedes-AMG GT3 entry. Won at Sebring and Circuit of The Americas and claimed five podium results.
2018
Won second consecutive IMSA Michelin Endurance Cup GTD title. Finished third in GTD season championship with a victory at Canadian Tire Motorsport Park and third-place runs at WeatherTech Raceway Laguna Seca and Sebring.
2019
Won third straight IMSA Michelin Endurance Cup GTD title. Finished seventh in WeatherTech Championship GTD standings with a victory at VIRginia International Raceway alongside No. 33 Mercedes co-driver Ben Keating.
