The worst possible thing any Cleveland Browns fan can imagine, even worse than more losses, came true on Sunday. Stalwart left tackle Joe Thomas departed with an injury to his left arm. He collapsed during a play in obvious pain during Sunday’s 12-9 loss to the Tennessee Titans.

The team quickly confirmed it was a triceps injury and the future Hall of Fame tackle would be out the rest of the game. Now it appears Thomas will miss much more time.

#Browns LT Joe Thomas is feared to have a triceps tear, sources say. If the MRI confirms it Monday, it likely means season-ending surgery. — Ian Rapoport (@RapSheet) October 22, 2017

Before Sunday, Thomas had never missed a snap since being the No. 3 overall pick in the 2007 NFL Draft, let alone a full game. His legendary durability was honored earlier this season when he played his 10,000th consecutive snap, believed to be an NFL record.

If Thomas is indeed out, Spencer Drango will get the first crack at trying to fill his shoes.