Kimie Bunyasaranand
Thursday March 7th, 2013

Mariano Rivera may announce his retirement for the end of this season, according to ESPN's Buster Olney. The 43-year-old reliever is expected to make the announcement as early as Saturday. The news would set up a possible summer-long goodbye tour around the MLB, similar to Chipper Jones's last season, after he made his retirement announcement in March.

Rivera had considered retiring after knee surgery ended his season last year, but  decided to come back. The 12-time All-Star has spent his entire 18-year career with the Yankees and is the all-time saves leader in the MLB with 608.

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