Cleveland Browns starting right tackle Jack Conklin suffered a season-ending left knee injury Sunday, coach Kevin Stefanski confirmed Monday.
Stefanski didn't provide specifics of the injury, but a source told ESPN's Adam Schefter that tests revealed that Conklin tore the ACL and MCL in his left knee.
Conklin will undergo season-ending surgery.
"Very, very disappointed for Jack," Stefanski said Monday. "He's a huge part of this team. When he gets this surgery, and when he's ready, he's going to be back in this building helping us, because he's a big part of that offensive line room.