Riddle was not medically cleared to wrestle Seth Rollins at SummerSlam. So the match was postponed but Riddle shows up in SummerSlam and called out Seth Rollins.
Seth Rollins come out, WWE officials tried to stop Seth Rollins from entering the ring but it failed Riddle and Seth Rollins marched towards each other, started punching each other. Both entered the ring.
WWE referees and guards tried to stop both from fighting, Seth Rollins hits Riddle on the injured spot and Seth Rollins stomps Riddle and laughed at him and went back happily.
Riddle was screaming in pain, he was barely able to stand, Riddle worsens his injury.