I thought ODLH was beating him pretty handily before he abandoned his jab and started trying to rough him up. Of course as it's been stated PBF is good at adapting, so maybe he would've (or did) just adapt and force a change of game plan.

Attacking his body seems to be a logical tactic, but the problem is he's so fast on his feet. Plus, with his hand speed, he always manages to get his own shots in to the head.