In 1964, as a sophomore, he started at left end for the Beavers, helping to lead the team to the 1965 Rose Bowl.
He played with them for five seasons, helping them to the 1969 NFL championship and a Super Bowl IV appearance.
Grim ended his career, playing with Fran Tarkenton and the Vikings for his final two seasons, helping the team to the 1976 NFC championship and a Super Bowl XI appearance.
Grim retired from the position after the Beavers' 2003 season, and was replaced by former offensive lineman Jim Wilson.
This biographical article relating to an American football wide receiver born in the 1940s is a stub.