Mariano Rivera to Retire at Conclusion of 2013 Season

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The greatest relief pitcher of all-time has announced his pending retirement.

Mariano Rivera, who is returning to the mound in 2013 after tearing his ACL while shagging fly balls last year, confirmed at a new conference today that he will call it quits following the upcoming season.

Mariano Rivera wallpaper

Said Rivera, 43, this morning at the Yankees' spring training complex, surrounded by teammates and club officials:

"After this year, I will retire... I thank God I was able to play baseball so many years."

Rivera is baseball's all-time leader in saves. He owns five World Series rings and a career ERA of 2.21.