Both in 2014 and 2015 he competed again with RSR Racing and again in the Prototype Challenge class. In those two seasons he entered three races. In 2014 he only entered the 24 Hours of Daytona, but he and his co-drivers were unable to finish and were classified in a disappointing 63rd position. In 2015 he entered the first two races of the season: the 24 Hours of Daytona, where he finished 34th overall and 4th in class, and the 12 Hours of Sebring, where he finished 31st overall and 6th in class.