He missed the rest of that game, as well the next two against Minnesota and Northwestern before returning the final two weeks of the regular season to contribute in ways that didn't require him to throw the ball.
The six-foot, 197-pound senior from Deerfield Beach, Fla., lined up at running back and also took take snaps without attempting a pass against Iowa and Ohio State while rushing for 220 yards on 23 carries and catching two passes for 24 yards.
Robinson entered the game during Michigan's second possession and ran for 15 yards on his first play.
Gardner threw 26 yards to Gallon, moving the Wolverines into position for Brendan Gibbons to kick a 39-yard field goal.
Down 14-3 after Sanders' punt return, Michigan marched 75 yards in 11 plays to trim South Carolina's lead to four, with Robinson carrying four times for 20 yards along the way. Gardner finished the drive by flipping his 5-yard touchdown to Dileo early in the second quarter.
Michigan began the day ranked second in the nation in pass defense, allowing 155 yards per game. South Carolina matched that in the opening half alone, with most of the yardage coming on Shaw's long touchdown throw to Byrd and Thompson's 70-yard completion to Jones that led to Sanders' second score for a 21-10 lead.
The Wolverines turned South Carolina's only turnover into Gibbons' 40-yard, second-quarter field goal and Matt Wile's Outback Bowl-record 52-yard field goal trimmed Michigan's deficit to 21-16 with just under seven minutes remaining in the third quarter.
Three of Michigan's five losses were to Notre Dame, Alabama and Ohio State, the teams ranked first, second and third in the final regular season Associated Press poll.
South Carolina ended on a five-game winning streak that followed consecutive losses to LSU and Florida.
The Gamecocks also won 11 games last season.