Scott Bruce Rolen is an American former professional baseball third baseman. He played 17 seasons in Major League Baseball (MLB) for the Philadelphia Phillies, St. Louis Cardinals, Toronto Blue Jays, and Cincinnati Reds from 1996 to 2012.

A third baseman, abbreviated 3B, is the player in baseball or softball whose responsibility is to defend the area nearest to third base — the third of four bases a baserunner must touch in succession to score a run. In the scoring system used to record defensive plays, the third baseman is assigned the number 5.