It appears that the severity of Big Cass' knee injury is as bad as was initially feared.

WWE posted an update on Cass last night, with it saying that he will have to undergo surgery. Dr. Chris Robinson noted that it looks like Cass suffered a torn ACL and possibly a medial meniscus tear. Robinson said that they would have to wait for a radiologist to evaluate Cass' MRI before making any final determinations.

If Cass did tear his ACL, the injury would keep him out of action for several months. Robinson said that the typical recovery time from the injury is nine months.

Cass hurt his left knee on Monday's episode of Raw when going for a big boot in a match against Enzo Amore. Amore held the ropes down to send him to the floor, but Cass ended up landing awkwardly. Cass tried to finish the match, though it was stopped after he went for the Empire Elbow and his leg buckled when trying to hit the move.