WWE has confirmed that Rey Mysteriop suffered a torn triceps during his tag team match at the Payback PPV on Sunday.
The legendary luchador was scheduled to face Seth Rollins in a singles match on Raw to determine who would go on to participate in the triple-threat main event, but ended up being replaced by his son Dominik at the last minute. Fans assumed this must be part of a storyline, but it looks like Rey really did sustain an injury.
"Rey Mysterio suffered a torn triceps during his match at WWE Payback Sunday night, WWE.com has learned. Mysterio teamed up with his son, Dominik, to defeat Seth Rollins & Murphy at the live WWE Network special. He was originally scheduled to face Seth Rollins on Raw in a match where the winner would advance to a Triple Threat Match later in the night, which would determine WWE Champion Drew McIntyre’s opponent at WWE Clash of Champions. Dominik will replace his father in the bout."
Mysterio just recently signed a new contract with WWE, so this couldn't have come at a worse time. Typically, a torn triceps will keep a wrestler on the shelf for up to 6 months.