#2. UFC 116: Brock Lesnar vs. Shane Carwin
Brock Lesnar made his way into the UFC with a bang. Carrying a tremendous amount of momentum, Lesnar ascended to the UFC heavyweight throne.
Brock Lesnar put his UFC heavyweight title on the line at UFC 116 in July 2010 at the MGM Grand. What followed the first bell of the fight was a brutal onslaught brought upon Lesnar by Shane Carwin.
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Going into the fight against Lesnar, Carwin had accumulated an unbeaten record spanning across 12 fights. What's more, he had finished every single fight in the first round.
Carwin tried to follow his handbook of finishing the fight in the first round. However, Lesnar somehow managed to weather the storm and made it to round two. Carwin, gassed after going all out in the first round, suffered a submission loss at the hands of Lesnar. The victory marked one of the greatest comebacks of Lesnar's career.
#1. UFC 52: Matt Hughes vs. Frank Trigg 2
The UFC welterweight title bout between Matt Hughes and Frank Trigg took place at the MGM Grand in Las Vegas in April 2005. Hughes was struck in the groin early into the fight, stifling his momentum. The referee dismissed protests by Hughes regarding the same.
What followed was a terrible onslaught of ground and pound from Frank Trigg. He chose to capitalize on the situation and tried to squeeze out a win. Although the UFC welterweight champion managed to survive that barrage of strikes, he was soon caught in a seemingly fight-ending rear-naked choke shortly after that.
Matt Hughes impressed fans all over the world by somehow slithering out of the chokehold. He then carried Trigg across the length of the octagon before slamming him to the ground and getting into a mount.
He went on to dish out some severe punishment before Trigg turned over, thereby offering Hughes the perfect opportunity to get a rear-naked choke in.
Matt Hughes managed to come back out of two fight-ending situations to eventually walk away with the win. What's more, the year 2015 saw the fight get inducted into the Fight Wing of the UFC Hall of Fame.
Watch highlights from the fight below: