A fight that many fans have asked for will happen at UFC 137.
UFC welterweight champ Georges St-Pierre will meet Strikeforce Welterweight Champion Nick Diaz in one of the biggest matches of the year.
St-Pierre, 22-2, is currently on a nine-fight winning streak while Diaz is riding a 10-fight win streak.
Despite Diaz being a tough fighter, many predict he will become another victim of St-Pierre. Some may also believe St-Pierre could move to middleweight . Here are some reasons why they may be right.