While WWE are yet to publicly acknowledge the injury, WWE superstar Luke Harper has undergone knee surgery and is expected to be out of action for several months.

Harper suffered what is believed to be a torn ACL last week during the WWE RAW dark match when his leg buckled from underneath him as he was throwing punches in the corner.

Harper was absent yesterday at the New York Stock Exchange as fellow Wyatt Family members (Bray Wyatt, Erick Rowan and Braun Strowman) rang the bell to open trading.