3. Avenging The Nate Diaz Loss1369721
At UFC 196, back in March of 2016, McGregor suffered his 1st loss since signing with the promotion. That setback came at the hands of Nate Diaz, who submitted the Irishman in the 2nd round, via rear-naked choke.
After suffering a submission loss in such a high-profile contest, a lot of fighters would be ready to move on to their next opponent. At the time, both men fought in different weight classes, so "The Notorious" one could have simply gone back to fighting at featherweight and left the loss be. However, in this case, McGregor was eager for a rematch, which is exactly what he got.
Diaz versus McGregor 2 ended up being one of the best fights in recent memory. Both combatants went to war for 5 gruelling rounds, with each man landing devastating shots. In the end, it was McGregor who was awarded the decision in a very competitive fight.
His willingness to ask for a rematch with Diaz, combined with his performance, showed that McGregor did indeed have the heart of a champion.