Until now, only championship fights have been five rounds, while all other fights have been three. The different structure would likely only be utilized for non-title main events, or other important bouts, like No. 1 contender fights.
White said that the UFC had planned to make June's UFC 131 main event, No. 1 contenders match between Brock Lesnar and Junior dos Santos a five-round fight, but felt it would be unfair to inform the fighters of the change after they had already begun preparations for the bout.
Five-round, non-title fights are allowed under the current unified rules, but have yet to be used by a major U.S. promotion. The motivation at least in part stems from the increased possibility of draws in three-round fights. As recently as February, Jon Fitch and BJ Penn ended a No. 1 contenders fight in a draw.
"I hate draws worse than anything," White said, then explaining that the possibility of a tie was one of his problems with soccer.
"You sit there and watch a game for hours and nobody wins?" he said. "I don't get it. That's one thing I hate about fights, too. Draws suck."
White gave no timetable for the first time the new format would be used.