The Giants' final few weeks of the 2017 season will be without their biggest offseason acquisition.
Mark Melancon will undergo season-ending pronator release surgery on his right elbow, according to John Shea of the San Francisco Chronicle. The surgery will be performed Tuesday in Los Angeles by Dr. Steven Shin.
Heading into Friday night's game in Chicago, Melancon is 1-2 with a 4.50 ERA and 11 saves. The 32-year-old has only pitched 30 innings this season.
On Dec. 5, the Giants signed Melancon to a four-year $62 million deal. At the time, the contract shattered the record for a contract awared to a closer.
After surgery, Melancon could throw again in six to eight weeks, according to the report.
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