Red Sox second baseman Dustin Pedroia has left Sunday night's game against Tampa Bay after straining his right groin on a swing.
Pedroia, last season's AL MVP and the league's 2007 Rookie of the Year, fouled a ball off to the third-base side in the third inning and TV replays showed him briefly grimacing.
Pedroia, hitting .320 with one homer and 12 RBIs, grounded out to end his at-bat before he left the game in the top of the fourth. He was replaced at second by Nick Green, who started at shortstop. Julio Lugo came in to play shortstop.
Last year, Pedroia hit .326 with 17 homers and 83 RBIs.