5. Injuries
In addition to glorious moments in his main roster career, Sami Zayn is also going to have low points. More big injuries could become the story of his career. Like Daniel Bryan, he is someone who has given 110% in a full on indy career. Big bumps and high spots were a norm for him, even in NXT. There's also questions if he is just naturally injury susceptible. His shoulder injury last year cost him the best part of 2015. It will now always be an area of concern for him. If he can stay fit, there's every chance he could emerge as one of Raw's biggest stars, but further injury almost feels like a certainty at some point for a wrestler like Zayn. His career could end up being a little stop / start with occasional time on the sidelines.