Just 12 hours after trading for Diamondbacks closer Brad Ziegler, the Red Sox placed closer Craig Kimbrel on the 15-day disabled list with a medial meniscus tear in his left knee.
The right-hander will undergo surgery Monday to repair the cartilage in his left knee and is expected to miss three to six weeks, the club announced.
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Kimbrel, named to his fifth All-Star team this week, was unavailable Friday in the ninth inning of a 6-5 victory over the Rays.