5 Most personal and intense rivalries in the UFC

An amused Dan Henderson fires a smile at a young Michael Bisping

#3 Frank Mir vs. Brock Lesnar

Brock Lesnar exacting his revenge on Frank Mir

Enough respect for today, though. Let's get back to our theme of disrespect and genuine hate towards another human being. While respect is an enormous part of any martial arts in the world, it is hard to ignore the examples that stand out as contradicting that general rule of thumb.

When Brock Lesnar made his UFC debut against the former Heavyweight Champion Frank Mir, a lot of people gave Lesnar the nod for his colossal size and strength advantage over Frank Mir. But Mir has always been a tricky fighter, especially on the ground, where he truly shines.

As the fight began, Lesnar knocked Mir down (or so they say) and began to leap into the dangerous world of Brazilian Jiu Jitsu with him. Trying to work out his tricky guard, Lesnar fell right into a knee-bar attempt from Frank Mir and the fight was over in under two minutes.

After the fight, Mir continued to be extremely disrespectful to Lesnar and went on to disrespect his family, his status as a role model for young kids and even his profession as a professional wrestler.

In the rematch, however, Mir was completely neutralised on the ground. Lesnar successfully kept a hold of Mir against the cage and systematically went on to demolish him with vicious ground and pound.

The rivalry is still at 1-1. Even though Mir is now on the downside of his career once again, he still couldn't resist making controversial comments against Lesnar, in the hopes that he could get a rubber match.

Although Mir later apologised for his comments, it is clear that this rivalry could be a great returning fight for Brock Lesnar and also help rekindle Frank Mir's lost momentum.