He had just finished a fight against Sheamus, when he was suddenly attacked by his arch-rival. A noisy fight started between the two, and Roman Reigns suffered injury for which he was later operated upon. Triple H was the malicious enemy, and on a Monday Night Raw.
Days after, the number one contender came back for the neck of the WWE World Heavyweight Champion, HHH. This time, Triple H suffered injury because Reigns had an advantage. The brawl ended backstage, where the two contenders were stopped by the Usos, Jack Swagger and Mark Henry.
Allwrestlingnews. Inc says, Dan Engler, a WWE referee was injured during the bloody brawl when a Triple H production case hit him instead of Reigns, the target. He has since been given medical attention.