Quinton Jackson thought Lyoto Machida won their bout at UFC 123. Machida agreed. Two of the three judges disagreed and the official win went to Rampage Jackson. UFC president Dana White was very vocal in saying that Jackson won the fight and that there would be no rematch.
Machida tweeted about Dana White (translated by Tatame.com):
"As for my boss, I won't waste any time talking about him. As he said: he's the president, he can do whatever he wants to. Who am I to argue with someone who talks like that and thinks he's always right?"