Together, Stephon Gilmore and Ronald Darby were a lockdown duo of cornerbacks at the top of the NFL statistically in terms of breaking up passes. Unfortunately that pairing is down to just one, as the Bills announced Wednesday that Gilmore’s season was over. The fourth year CB has been placed on injured reserve following surgery to repair a torn labrum in his left shoulder.

Gilmore sustained the injury back in Week 13, early in the third quarter as he attempted to make a diving tackle on Houston Texans’ RB Akeem Hunt and came up holding his left arm up near his chest. As Gilmore made his way to the locker room he showed little to no mobility in his left arm, leaving Buffalo fearing the worst. Well, on Wednesday their worst fears became reality as Gilmore was placed on IR.

As a unit, Darby and Gilmore have combined for 39 pass break ups this season and as recently as a few week ago ranked first and third on the league’s leaderboard respectively, for that statistic. While Darby continues to have a Pro Bowl caliber season he’ll be without his companion, Gilmore, on the other side of the defense for the Bills’ remaining three games.

With an open roster spot Buffalo went out and signed DE Max Valles off of the Oakland Raiders practice squad. Valles is a rookie, drafted in the sixth round of last May’s NFL Draft by Oakland. At University of Virginia Valles recorded 13 sacks and 79 total tackles during his college career.

Gilmore is the 10th Bill to find himself on season-ending IR this season, joining LB Ty Powell, DE Jarius Wynn, TE MarQueis Gray, RB Cierre Wood, WR Marquise Goodwin, WR Percy Harvin and more recently DE Kyle Williams, LB Tony Steward and DL Alex Carrington.