Date of birth: Nov 29, 1997
Rookie year: 2017
William Byron competes full-time in the XFINITY Series for JR Motorsports and is running for Sunoco Rookie of the Year honors. Byron won his first XFINITY race at Iowa in 2017, and has three victories in the XFINITY series, in total. He earned Rookie of the Year in the Camping World Truck Series in 2016 while setting a rookie record for wins, seven. Byron is also the 2015 NASCAR K&N Pro Series East champion.