BOSTON - The Yankees have sent first baseman Mark Teixeira back to New York for further tests on his bruised right shin.

Manager Joe Girardi made the announcement before the Yankees played the Boston Red Sox in the opener of a three-game series Monday night at Fenway Park.

"He woke up today and he was still sore, so we sent him back to kind of just redo the test to make sure," Girardi said.

Teixeira missed the entire three-game weekend series in Atlanta against the Braves. He is hitting .255 with 31 homers and 79 RBIs.