#1 Heath Slater (2011)

Best known for his time as a member of various stables, Heath Slater's ten-year stint on WWE's main roster ended when he was released last month.
From The Nexus to The Corre, 3MB and The Social Outcasts, Slater was a part of his fair share of factions - rarely making any sort of bid for singles glory.
Cody has no chance against John Cena? Details HERE
He did, however, compete in the 2011 SmackDown MITB ladder match, alongside former stablemates, Wade Barrett and Justin Gabriel. Slater was unsuccessful in the pursuit of the coveted briefcase, though, as Daniel Bryan took the win.
Ironically, Bryan would also defeat Slater in his final match with the company this past February.
Both of Heath Slater's 3MB colleagues, Drew McIntyre and Jinder Mahal, have famously gone on to lift the WWE championship - having been released by WWE in the past.
Could Heath Slater return to the promotion in the future and complete a hattrick of world championships for the stable's former members? Only time will tell.