Weaknesses of shoulder roll.

[Sleepwalker]

Oscar was too old.
Maidana too limited.
Hatton too dumb
Judah too erratic

Oscar never had stamina. Youth doesn't change that. You could say a younger Oscar would have done worse because a younger Oscar had no right hand to keep Floyd honest. Excuses can be made for anything so it's better to just save the excuses for the women. When they fought Floyd won, when they were younger Oscar wouldn't fight him.

The Oscar that fought Vargas would have beaten Floyd Mayweather.

2002 154lb Oscar was the best Oscar ever. I've always felt that was the ideal weight for him even though most of his success and prime years were spent at 147.

[Jimanuel Boogustus]

The only weakness in Floyd's shoulder roll, is that he bends at the waist with it, which means there is an opportunity to feint him into bending at the waist, while changing the angle on him (to his left).

Generally, moving around his left is a better idea than not, if you have very good feet/ balance.