#3 Edge
Edge was one of the most consistent performers in WWE from the Attitude Era right up till his retirement. Edge was a natural heel but succeeded equally well as a face.
However, on April 11th, 2011, Edge announced his retirement from professional wrestling due to a life-threatening injury. Just like Daniel Bryan, Edge retired at the prime of his career when he could have had several fantastic moments and feuds in WWE.
With his retirement, it also took away many potential classics which we could have seen if he was still wrestling. The idea of seeing him and AJ Styles mix it up in the squared circle sends chills down the spine.
Let's move to yet another legend, who had his career cut short due to an injury.