Posted: 7:17 PM May 3, 2012 Reporter: from Tim Staudt
Baseball's all time saves leader was injured Thursday shagging fly balls during batting practice in Kansas City. The New York Yankees' Mariano Rivera crumpled on the warning track after chasing a fly ball in obvious pain to a knee. He was carted off and taken to a local hospital for an MRI. The 42-year old Rivera has hinted this may be his last season before retirement. He has a 2.16 earned run average in 9 appearances so far this spring.