Education
Cronin attended Ione High School, before transferring to C. K. McClatchy High School after his freshman season.
Cronin attended Ione High School, before transferring to C. K. McClatchy High School after his freshman season.
He played college football at the University of the Pacific. He practiced football and basketball. He accepted a scholarship from the University of the Pacific.
In 1984, he was inducted into the Pacific Athletics Hall of Fame.
Detroit Lions
Cronin was selected by the Detroit Lions in the seventh round (74th overall) of the 1956 NFL Draft. He initially made the team as a pass rushing specialist.
In 1957, he contributed to the team winning the NFL Championship. Dallas Cowboys
Cronin was selected by the Dallas Cowboys in the 1960 NFL Expansion Draft.
He became one of the first starters at outside linebacker in franchise history (the other was Wayne Hansen).
On July 30, 1961, he was traded to the Washington Redskins in exchange for a draft choice. Washington Redskins
Cronin played two seasons for the Washington Redskins before retiring in 1963, after he was placed on the injured waiver list. He only missed one game in seven seasons in the league.
After he retired, he works as the Detroit Lions" chief scout.
In 1965, he became the first person hired by the newly formed Atlanta Falcons and served as the Director of player personnel.