Brock Lesnar's 6 best World Title defenses

#3 Brock Lesnar vs. Roman Reigns vs. Seth Rollins (WWE World Title, WrestleMania 31)

Seth Rollins shocked the world by winning the WWE Title at WrestleMania 31.

Without being hyperbolic at all, it is safe to say that Roman Reigns was the most hated man in WWE (at least judging by the reaction by the live crowds) in 2015. Even a year after Daniel Bryan's huge title victory over Randy Orton and Batista in the main event of WrestleMania XXX, the WWE Universe was still choosing Bryan as their favorite Superstar.

When Roman Reigns won the Royal Rumble in 2015, the crowd was not happy, and even having The Rock himself come to the ring to endorse Reigns as the winner didn't help the crowd in Philadelphia warm up to the former Shield member.

Since the live audiences didn't get what they wanted, they instead chose to cheer Lesnar, who was positioned as the bad guy. Even though he was supposed to be, and acted like a terrible villain, Lesnar was so different from everybody else on the roster that fans couldn't help but cheer for him, especially when they either didn't like or didn't care one way or the other, about anybody on the other side of the ring.

WWE marched onward, however, very strongly pushing Roman Reigns on the fans as the underdog good guy while trying everything possible to make Brock Lesnar in a bad guy bully and an unbeatable monster. It didn't work, because when WrestleMania came around, the crowd in Santa Clara, California was ravenous to see Brock Lesnar tear Roman Reigns to pieces.

That is exactly what happened, yet somehow even though the crowd didn't react the way WWE wanted them to (Reigns as the underdog getting up every time he got knocked down), they still had a massive reaction.

The reaction was that the fans in attendance were angry when the supposed underdog kept getting up, but delighed every time the conquering Beast Incarnate put him back down. Both men threw their best shots at each other and it was the exact spectacle we have come to expect as the main event of WrestleMania.

And then the unthinkable happened. Both men were down after a grueling battle, but there still wasn't a winner or a loser. Seth Rollins' music played inside the cavernous stadium, the crowd went wild (even though he was a hated bad guy) and he cashed in his Money in the Bank contract.

It was the first time the contract was cashed in at WrestleMania, and also the first time it was cashed in during an ongoing match. It was sheer insanity, and made an already great match into an instant classic, and created one of the best "WrestleMania Moments" of all time.