#1 Dean Ambrose
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When Dean Ambrose was a part of the Shield, everyone was expecting him to a consistent contender in the main event picture. Years later, Roman Reigns and Seth Rollins have clearly done better in that role.
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Ambrose has gotten to the point as a baby face that when WWE needs a reaction for a title change or anything, he is the guy. After he loses, it's back down the ladder until they need him again.
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Ambrose sadly was a transitory champion and othing more than that. WWE doesn't want to admit it but Dean Ambrose is better feuding over the mid-card titles like the Intercontinental Championship than anything else.
Edited by Raunak J