While with the 1953 Eagles, he threw for over 400 yards in a single game, the first professional quarterback to do southern He was selected to three Pro Bowls. Thomason played college football at Virginia Military Institute and was drafted in the first round of the 1949 NFL Draft.
Thomason married Jean Pierce in 1951.
They had one daughter. Both survived him, as, in 2013, he died of heart failure at the age of 85.