Mariano Rivera Suffers Knee Injury In Batting Practice

New York Yankees closer Mariano Rivera suffered a right knee injury during batting practice on Thursday night before the Yankees-Royals game at Kansas City's Kauffman Stadium.

Rivera was shagging flyballs in the outfield, when his knee buckled as he tried to catch a flyball. The 42-year-old fell to the ground in serious pain, and was carted off the field. The Yankees' trainers diagnosed the injury as a "twisted right knee", but Rivera was sent to a nearby hospital to get an MRI, and the final results wait to be seen.

Here's video of the 12-time All-Star's injury from MLB.Com:

Alex Rodriguez and Joe Girardi's reactions say it all.

UPDATE: Mariano Rivera tore his ACL and is likely done for the season. As Dustin Parkes of our MLB blog, Getting Blanked, said, "it’s not completely out of the realm of possibility to suggest that we’ve seen the last of the greatest reliever of all time.

H/T: Deadspin