Mariano Rivera: New York Yankees Closer Carted off with Apparent Knee Injury

Michael NargiSenior Analyst IMay 3, 2012

ARLINGTON, TX - APRIL 23:  Mariano Rivera #42 of the New York Yankees throws against the Texas Rangers at Rangers Ballpark in Arlington on April 23, 2012 in Arlington, Texas.  (Photo by Ronald Martinez/Getty Images)
Ronald Martinez/Getty Images

The New York Yankees are worried about All-Star closer Mariano Rivera after he had to be carted off the field Thursday night at Kauffman Stadium in Kansas City.

Rivera was shagging fly balls in the outfield when he appeared to slip on the warning track and crashed into the outfield wall. He immediately clutched his knee and fell to the ground in pain.'s Bryan Hoch reported via Twitter Rivera's injury was to his right knee:

Mariano Rivera is being carted off the field with a right knee injury suffered during batting practice

— Bryan Hoch (@BryanHoch) May 3, 2012

The Yankees can only hope for the best in this situation, but the injury did not look good for Mo.

Rivera routinely fields balls in the outfield in batting practice, and this appears to be a freak accident.

This season, Rivera has appeared in nine games and has recorded five saves.