#4 Corey Graves
Corey Graves was forced to retire from his wrestling career when he was just 30-years-old, when his injuries from his Independent wrestling days finally caught up with him. Graves had already wrestled all over the world before he was integrated into the NXT roster and became a Tag Team Champion with Neville, but shortly after they dropped the Championship to The Ascension, he was put on the shelf with a concussion.
He later returned but was then put out of action a few months later with a second concussion. It was this second concussion that put him out of action indefinitely when Graves decided to follow doctors' orders. Graves then retired from action following a speech on NXT and has since made the switch over to commentary.
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Over the past few years though, Graves has proved that he has untapped potential behind the commentary desk.