Martin Truex Sr. (born March 24, 1958) is an American former driver in the Busch North Series. He is the father of 2017 NASCAR Cup Series champion Martin Truex Jr. and NASCAR Xfinity Series driver Ryan Truex. Truex Sr. retired to advance Martin's career. He owns commercial fishing company, Sea Watch International. [1] He made 15 starts in the Busch Series from 1989 to 1998. His best finish came in 1994, when he finished 12th at Nazareth Speedway.