Pirates designated C Michael McKenry for assignment.
Michael McKenry has qualified as a Super Two and will be arbitration-eligible this offseason.
Pirates transferred C Michael McKenry from the 15-day disabled list to the 60-day disabled list.
Michael McKenry underwent surgery Tuesday to repair a torn meniscus in his left knee.
Pirates placed C Michael McKenry on the 15-day disabled list with a sprained left knee.
Michael McKenry could require a trip to the disabled list after injuring his left knee on a slide into second base Saturday.
Michael McKenry homered in the seventh and eighth innings as the Pirates came back to beat the Reds 10-7 on Sunday.
Michael McKenry went 2-for-4 with a solo homer in a losing effort against the Reds on Saturday.
Michael McKenry went 3-for-4 and connected on his ninth home run of the season, powering the upstart Pirates to a come-from-behind 6-5 victory on Friday.
Michael McKenry blasted his seventh home run of the season, leading the Pirates to a 3-1 victory over the Giants on Saturday.
Michael McKenry hit a three-run homer in Sunday's loss to the Cardinals.
Michael McKenry launched a solo home run off Jonathan Papelbon in the ninth inning on Tuesday, but it wasn't enough to deliver a victory over the Phillies.
Michael McKenry provided a lift for the Pirates on Thursday, going 1-for-3 with a pair of RBI including the game winner in the Pirates 5-4 extra inning victory over the Reds.
Michael McKenry hit his second home run of the season Tuesday, but it wasn't enough to overcome the Marlins.