Cotham had surgery on his right knee Tuesday, and the procedure repaired a torn meniscus and microfractures in there, Zach Buchanan from the Cincinnati Enquirer reports.
It's possible that Cotham won't even be ready for the start of the 2017 season, given the nature of his injuries. Moreover, with the bullpen stabilizing over the last six weeks for the Reds, there may not be a spot open for him.