#4. Daniel Cormier vs. Jon Jones (UFC 173)

When he won the UFC light heavyweight title in 2011 by defeating Mauricio ‘Shogun’ Rua, it was clear that Jon Jones was capable of a dominant reign as champion.
However, few people realized quite how dominant ‘Bones’ would be. Over the years that followed his title win, Jones absolutely destroyed every foe put in front of him, from Quinton Jackson and Lyoto Machida to Rashad Evans and Glover Teixeira.
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By the time 2014 came around, there was a distinct lack of prospective opponents for him. That made it all the more interesting when former Strikeforce heavyweight champ Daniel Cormier decided to drop to 205 pounds in order to chase a fight with ‘Bones’.
Cormier quickly defeated late replacement Patrick Cummins in his debut in the division. When he followed that win with a dominant victory over Dan Henderson, it was clear that a fight between him and Jones was inevitable.
Sure enough, ‘DC’ got on the mic and immediately called Jones out in the most entertaining way possible, telling the champion that he couldn’t run forever and no matter what happened, he was coming for him. More to the point, he stated that he could easily outwrestle Jones, claiming he could take him down 100 times if he wanted to.
Naturally, UFC fans across the world were blown away by the callout. Cormier vs. Jones went from a cool-sounding prospective fight to the biggest feud in the promotion literally overnight – leading to two major pay-per-view events.
#3. Nick Diaz vs. Georges St-Pierre (UFC 137)

When the UFC bought out its rival promotion Strikeforce in early 2011, the fight that most fans wanted to see the most was a clash between welterweight champions Georges St-Pierre and Nick Diaz.
The promotion wasted no time in signing the clash, booking it to headline UFC 137 that October. However, when Diaz failed to fulfil his media obligations, Dana White and company pulled him from the bout in favor of Carlos Condit.
In turn, Diaz was instead left to fight B.J. Penn in the semi-main event.
However, GSP then blew his knee out, sidelining him entirely. While Condit was still considered the top contender, a fight between the Canadian and Diaz immediately came back to the forefront.
That feeling only amplified when Diaz destroyed Penn. Before he was even handed a microphone, he began to rant at St-Pierre, who was shown watching on from the crowd.
Once Joe Rogan did give Diaz the mic, the fans were treated to an all-time classic callout. According to Diaz, GSP wasn’t hurt at all, he was instead scared to face the Stockton native in the octagon.
For his part, St-Pierre responded with a mocking gesture, pretending his hands were shaking. From that moment on, his feud with Diaz became arguably the biggest one in the UFC.
While it took the promotion well over a year to get the two men into the octagon against one another, it didn’t affect the interest of the fans, as their fight ended up drawing over a million buys on pay-per-view.