Finished third in GTLM standings in final year with co-driver Jan Magnussen in No. 3 Corvette C7.R. Had six podium finishes with best results of second at Long Beach, Mid-Ohio and Watkins Glen. Qualified on pole at Watkins Glen.
2018
Co-drove to second consecutive GTLM championship with Jan Magnussen in No. 3 Corvette. Had eight podiums in 11 races but became first to win a championship without winning a race since Craig Stanton took GRAND-AM GT title in winless 2005 season. Earned pole position at Lime Rock.
2017
Won GTLM title alongside Magnussen in No. 3 Corvette with three victories (Sebring, COTA and VIR) and top-five results in all 11 races.
2016
Finished third in GTLM championship standings alongside Magnussen with a victory at VIR and five podium results. Took pole position at CTMP.
2015
Finished third in GTLM championship with victories at Daytona and Sebring and a total of four podium results in 10-race season. Won IMSA Michelin Endurance Cup.
2014
First year in new Corvette C7.R yielded GTLM victories at Long Beach, WeatherTech Raceway Laguna Seca, Watkins Glen and Canadian Tire Motorsport Park). Earned pole at WeatherTech Raceway. Finished third in season standings.