This was a case of "what the f*** happened to his face?!" Over the summer of 2015, Cena and WWE Champion Seth Rollins contested a very good feud. But on one match on Raw, things went horribly wrong. A wayward Rollins knee crunched into Cena's face, sending the franchise star's nose to the other side of his cheek. It was a sickening injury, with the nose bloody and disjointed. Thankfully, Cena came back from it, going on to work a fantastic match with Rollins at SummerSlam.