Marinaro was a three-time All-American, received the prestigious Maxwell Trophy, and was named AP and UPI Player of the Year in 1971, the same year he finished second in the Heisman Trophy ballot. His collegiate achievements were further recognized with his induction into the College Football Hall of Fame in 1991 and being voted the Ivy League Player of the Era in 1992. Marinaro transitioned to professional football when he was drafted by the Minnesota Vikings in 1972, becoming the first rookie to start under coach Bud Grant. During his tenure with the Vikings, he contributed to the team reaching consecutive Super Bowls in 1973 (Super Bowl VIII) and 1974 (Super Bowl IX).
He also made appearances in popular series like ‘Days of Our Lives’ (2011) and ‘Drop Dead Diva’ (2013). Beyond acting, Marinaro has lent his recognizable presence as a spokesman for various products.