During Raw tonight, Sin Cara suffered what appears to be a hand injury during his match against Alberto Del Rio.
The injury came when Cara dove through the ropes to the outside to hit Del Rio, and upon landing he immediately signaled the referee to come over, and the ref put up the X sign and stopped the match.
Several of Sin Cara's fingers looked out of place, which leads one to believe he might have suffered a broken hand, however that has yet to be confirmed.