Became the starting quarterback of the Dallas Cowboys as a rookie in 2016 after an injury to Tony Romo. He was named AP Offensive Rookie of the Year after throwing for 23 touchdowns and just 4 interceptions while leading the Cowboys to a 13-3 record in 2016.
He was a standout duel threat quarterback during his time at Haughton High School. He played college football at Mississippi State University, where he won the Conerly Trophy as the best player in the state of Mississippi in both 2014 and 2015.
He has older brothers named Tad and Jace. His mother, Peggy, passed away in 2013.
He was teammates with future NFL defensive end Fletcher Cox at Mississippi State.