If marquez stays at 135, which I think would be best for him, there just aren't many other options aside from guererro. Perhaps soto or funeka and that is really about it...He shouldn't move up to 140 because 135 is probably as high as he should be. the mayweather fight was fought at 143 and we know he looked less than spectacular in the fightto put it mildly, sure some of that is down to how good pbf is but part of it had top be jmm's weight and smaller size, he's just not big enough to go above 135. I honestly don't think jmm- guererro would be a bad fight at all both got decent pop to their punches and think it would actually be quite exciting.