It was truly a strange segment. The Lucha Dragons made their entrance, then Raw went to a commercial break. When they returned, Kalisto was lying motionless outside the ring and the commentators offered no explanation for his apparent injury. The Dudley Boyz, their opponent, demanded that Sin Cara come in the ring and they made quick work of him.
Now, WWE has yet to announce anything in regards to Kalisto's injury, but according to fan accounts on Twitter, he didn't move at all during the segment and was apparently legitimately hurt. If any news break, we'll be sure to keep you posted.