#1 Jon Moxley
One of CM Punk's last feuds, before he left WWE, was at the end of 2013 against The Shield. In fact, he even beat them in a three on one handicap match at TLC 2013.
Moxley has created a huge buzz by joining all elite wrestling and many were hopeful that either Moxley or Punk would show up at the show and they got one of them which was defiantly good enough.
While they have wrestled before they haven't as much as Punk has with others such as Jericho, and the last time they wrestled was over five years ago before Moxley and the shield broke up and he became a big singles star.
The match would be huge as Punk is obviously a massive star and Moxley had literally main evented a WWE PPV this year so he is very much a star as well. If Punk does finally return to wrestling, this would be one of the biggest matches possible.