#5 Sami Zayn
Sami Zayn is one of my favourite WWE superstars of this generation. The guy has all the potential in the world to follow the same path as Daniel Bryan, A.J. Styles, and CM Punk.
However, the Underdog has not received any significant push to make a name for himself under the experiential supervision of Vince McMahon.
His heel turn did felt very promising, but the company didn't capitalize on his momentum when he and Kevin Owens turned their attention to Monday Night Raw.
It's an unfortunate place for Sami Zayn because the former NXT Champion has not held a single championship on the main roster, let alone the World Championship.
His last feud with Bobby Lashley did more harm to him than it did to the Dominator, and it certainly diminished all the momentum Zayn had when he made the transition to the red brand.
While he is currently recovering from the injury that sidelined him, one wonders whether he'll ever be a big deal in the company.