Mariano Rivera Had To Be Carted Off The Field With A Possible Knee Injury Sustained During Batting Practice

That's according to numerous reports out of Kansas City, where the Yankees closer slipped on the warning track as he was shagging fly balls before tonight's game against the Royals. According to, the 42-year-old Rivera had to be carried to the cart by manager Joe Girardi and bullpen coach Mike Harkey. »5/03/12 7:34pm5/03/12 7:34pm