J. C. Tretter

Joseph Carl "JC" Tretter Jr. is an American former professional football player who was a center in the National Football League (NFL) and executive director of the NFL Players Association (NFLPA) since 2026. Tretter played college football for the Cornell Big Red and was selected by the Green Bay Packers in the fourth round of the 2013 NFL draft. He later played for the Cleveland Browns from 2017 to 2021.