Id say roach or Mosley SR then..

Roach has done very well with offensive fighters with power and skill, and thats exactly how Oscar will need to be in this fight;

I know little about Mosley SR, and as sum1 said, hes studied Oscar, found out his 'weaknesses' and assessed the best way to beat him and then done it with his son - could be interesting...

On a side note tho, HAHA mayweather SR! all this shit and now he gets nothing, No money and looks a complete tw@ for considering training a guy to whoop his own son, what a PRICK