The WWE has confirmed Rusev suffered an injury during the tapings of Main Event. They issued the following statement.
Rusev sustained a proximal bicep tendon rupture during his match with Neville at the WWE Main Event tapings Tuesday night, WWE.com can confirm. The match was called due to the injury, and the former U.S. Champion’s recovery time is currently slated at three to four weeks.
Rusev could still compete at Survivor Series, but the WWE probably won’t take that risk.