"Diaz can definitely be a competitor at 155 lbs. He's had some issues in starting out slow in fights, and it led to a number of decision losses prior to his move up to the welterweight division in the first place. That said, he was very competitive in all of those fights, and his final lightweight fight was a fairly boring fight with Gray Maynard in which he dropped the decision but was in the fight the entire way." quote taken from mma torch.
Although i do agree that his drop down to 155 is probably where diaz is at his best, didnt he originally move to 175 cos he was struggling to make weight. The article also states that diaz thinks he can make a title run at lightweight, personally im not sure that it is likely but if he does have a shot it is at 155 amongst fighters of a similar size and strength. But it comes down to if he can make weight without it affecting his performances.
Although i do agree that his drop down to 155 is probably where diaz is at his best, didnt he originally move to 175 cos he was struggling to make weight. The article also states that diaz thinks he can make a title run at lightweight, personally im not sure that it is likely but if he does have a shot it is at 155 amongst fighters of a similar size and strength. But it comes down to if he can make weight without it affecting his performances.