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Judges selected by the Nevada State Athletic Commission that night scored the bout 48-46 for Edgar, 48-46 for Maynard and a 47-47 draw. Edgar retained the belt and went on to defeat Maynard in a rematch nine months later.
Even before the draw with Edgar, Maynard said he has believed mixed martial arts needs to alter the way it scores fights -- and a half-point system would do that.
"If they did half-points, it would be better for the sport," Maynard told ESPN.com. "It's always 10-9, 10-9, 10-9. There's no way to add in that 'this guy did more in that last round.' The half-points would help choose who won the fight."
In the first round of that 2011 title bout, Maynard appeared to be on the verge of a finish when he knocked Edgar down multiple times with punches.
All three judges gave Maynard a 10-8 score in the first round. Some argued that if that dominant of a round was 10-8, then a 10-7 round doesn't really exist.
Edgar went on to recover, somewhat miraculously, between the first and second rounds. On one judge's card he won each of the next four rounds, thus the fight. Those rounds Edgar won were much closer than the one-sided first.
Under a half-point system, it's possible that one or two close rounds scored for Edgar would have rendered 10-9.5 scores, therefore altering the final result.
A similar situation occurred earlier this month in Las Vegas during a welterweight title fight between Georges St-Pierre and Johny Hendricks at UFC 167. St-Pierre retained his title via split decision.
Gray Maynard believes a switch to a half-point scoring system might have helped him win a UFC title in his second bout with Frankie Edgar.
The result basically came down to how each judge scored a close first round. Two scored it for St-Pierre 10-9, the same score Hendricks would receive for a far more dominant effort in the following round. Had the half-point system been used, Hendricks would have likely won unanimously.
In Maynard's opinion, the scoring of these types of fights isn't ruining the sport (a concern voiced by UFC president Dana White at UFC 167), but it demonstrates athletic commissions' unwillingness to evolve with the sport.
"The scoring system isn't ruining the sport, but it's not helping it grow," Maynard said. "There has been a lot of talk about judging, and you have to take that into account and evolve. The sport changes every year, every month, every day. That change has to happen with the scoring as well."
Several athletic commissions have tested the half-point system through trial runs, although a committee ultimately advised the Association of Boxing Commissions against its use in 2012. The system has its fair share of detractors, including White.
Obviously, Maynard has history to consider when it comes to his stance. The 34-year-old lightweight, whose fight with Diaz on Saturday could very well go to a close decision as it did in 2010, said if commissions don't change the scoring system, they should at least clarify more what they're scoring in a fight.
"It's just kind of hard to tell what they want," Maynard said. "There are a couple that look at the points, that look at damage as points. Some don't look at the ground game at all.
"I don't know. That's the question. What do they want, what do they look at, how will they score it?"