
2. UFC 196 McGregor vs Diaz I
At the time it happened, UFC 196 was the most-watched and purchased UFC PPV of all time. 1,317,000 purchases of the event was registered. The success of the event can largely be attributed to the hype that swelled around the fight after Nate and Conor went back and forth at several pre-fight press conferences.
The event was supposed to be headlined by Conor challenging then-lightweight champion Raphael Dos Anjos, only RDA was forced to pull out due to injury. Diaz was chosen as the last-minute replacement, partly because of a profanity-laced promo he cut on Conor after a recent victory. Diaz had just defeated Michael Johnson and then called out Conor live on Fox Sports.
Conor would gas midway through the second, panic, get tagged, try to take Nate down and eventually get himself choked out. It looked like the Conor McGregor show was over, but here we are now and he has already regained everything he lost that night.