8. Michael Elgin
The current ROH Champion, Unbreakable Michael Elgin would be an intriguing opponent for Punk. Elgin may occupy the throne in Punk's former kingdom, but he has only been Champion since ROH's Best in the World PPV last month. He's clashed with every top star in ROH, but a victory (or even a match) against a post WWE Punk would cement Elgin's career. More than just a big man, the Unbreakable one can go in the ring, with unspeakable agility for someone his size. He can also work an audience with his amazing 90 second delayed vertical suplex which fans love counting along to and he's still only in his twenties. If he isn't signed by WWE in the next couple of years, expect him to be waiting in the wings for the Straight Edge Superstar.