id say hatton and spinks are the weakest ,....so its got to be one of them.

hatton,.... acid test was collazo. hatton wouldnt have lasted 30 seconds longer than the final bell.... he was out on his feet.

spinks,..... no power as somebody else said earlier,... and his running match away from roman k . just to survive was pitiful.

i bet pbf goes for another 5/1 fighter.