Abaraham if he can get past P-Dub's reach. Williams isn't impossible to hit, and although he has shown a very good beard thus far, Abraham might just be the no.1 P4P puncher, so must be given a big chance. I think Pavlik vs. Williams would be a straight-on, face-to-face (at a distance) war and Williams would win a decision. He sits down on his punches more (at one fight admittedly) at MW and I think he has the power to back up the ever-increasingly vulnerable Pavlik. Unlike JT, Williams would go for the kill. Santos has a good chance at JMW, but I think P-Dub would win a decision. Apart from that JMW seems to be his for the taking (as long as Dzrinszuk, oops, spelling, stays in Europe) MW isn't a packed division but there are genuine tests for him there, as his size advantages would be diminished.
"Ever increasingly vulnerable Pavlik??" The kid just went 12 rounds with the second best LHW in the world, and took multiple flush shots in damn near every round. In the Taylor rematch he got stronger as the fight wore on. Way back in '05 in the mid rounds Kelly took over and made a close fight with Zuniga, who hits WAY harder than Williams, into a one-sided beat down. KP ate Miranda's shots like they were freaking Skittles. At one point he stood flat footed with Miranda coming at him, his hands a chest height, took 3 flush right hands, and didn't even blink. Williams does not have the power to make Kelly respect him, let alone keep Pav off of him, and unless he made some substantial style changes, Paul would take the kind of beating that ruins fighters. A Williams UD is the least likely outcome. Paul's best option would be to hope for an earely KO so he can collect his check, go home, and when he's an old man he can tell his grandchildren he once fought the middleweight champion.
Unless PW has some serious power that we dont' know about, the only way I see him beating KP is if he can put on a PBF type performance and dance his way to a unanimous decision.