[3] In 2009, King moved up to the UARA-STARS Late Model Series, as part of his participation in the Bill Elliott Driver Development Program.
[5] King made his debut in the NASCAR Camping World Truck Series in 2010, competing at Bristol Motor Speedway and finishing fifteenth.
He made six additional starts in the Camping World Truck Series through 2010 and 2011 before signing with Red Horse Racing to drive the team's No.
[7] King had been involved in two crashes over the course of the race, one of them taking out then-leader Johnny Sauter;[8] the event ran through three attempted green-white-checkered finishes before ending under the yellow flag.
[15] In February 2014, King announced that he would drive for NTS Motorsports with sponsorship from GunBroker.com in the season-opening Truck Series race at Daytona that month, finishing 23rd.