New York Yankees closer Mariano Rivera tore his ACL on Thursday night. Mo was shagging fly balls during batting practice before the game against the Kansas City Royals.

Mariano Rivera's illustrious career could be coming to an end for an extremely odd reason. Rivera was shagging fly balls before the Yankees lost to the Kansas City Royals 4-3 last night. Mo was backtracking toward the fence when he twisted his knee and went down. It turns out that Rivera tore his ACL and meniscus.

Mariano Rivera is 41-years old. He was very emotional with the media following the game. Rivera knows that his career might be over after suffering an injury that is this significant. Mo is the all-time saves leader with 608 career saves. He is commonly known as the best closer in MLB history.

It would be an absolute shame if Mo's career ends this way. Shagging fly balls is something that Mo has done throughout his career. It's very common to see pitchers shag fly balls before games. Unfortunately, a freak injury occurred. It's an easy second guess. I'm not blaming anybody for this. Nobody else was either throughout Mo's 18-year MLB career until now.

Brian Noe is the Program Director at 104.5 The Team, ESPN Radio in Albany, NY. Brian also hosts “The Noe Show” each weekday from 1-3pm ET on WTMM.