#2 Sami Zayn
Sami Zayn has proven his place on the WWE roster, both as a likeable babyface and his most recent run as an entertaining heel. However, it now appears as if Zayn may have peaked as far as any potential push is concerned. The Canadian has most recently suffered a string of defeats, his most recent win coming on the March 6th edition of SmackDown when he won the fatal 5-way.
It seems difficult to see where Zayn can go from here. A potential face turn and feud with partner Kevin Owens has potential, but the reason he turned heel in the first place we to re-energize his character.
This doesn't seem to have worked and after losing a series of big matches, Zayn appears to have faded into relative obscurity. It appears his only place on the roster right now is to put over other talent and his upcoming match at Money In The Bank with appears to only serve the purpose of getting Bobby Lashley over.
Of course, WWE cannot push everyone, but after a dramatic heel turn at Hell in a Cell last year, the chance was there for Zayn to become an established heel. Instead of this he has played second fiddle to partner Kevin Owens and suffered too many losses.