Good post, especially the point about Alexander not being a thinking fighter. Disrupt his rythym and he begins to struggle, he doesnt adjust to his opponent, he just fades as his opponent works him out. I do think Brook will struggle with Alexander, the guy is a speed demon and phyically brilliant. His undoing will be how predictable he becomes after 4 or 5 rounds, once Brook adjusts to the speed and gets his timing down on the jab i think Alexander will be getting hit hard and a lot. I think Brook takes him by close decision or even late stoppage / retirement.