#4) Bobby Roode and James Storm
Yes yes, I know that Bobby Roode and The Cowboy James Storm were actually a tag team in TNA but my list, my rules, thank you very much.
The duo were one of the top teams in the company before Roode moved on to the superb singles career that he enjoys to this day. Storm himself had a shot with the WWE through an NXT contract but things never worked out for The Cowboy.
He has since returned to TNA (or Impact Wrestling or Global Force Wrestling or whatever you want to call it).