CM Punk has officially put an end to his mixed martial arts career after notifying the UFC of his retirement as he returns full time to professional wrestling.
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CM Punk retired from UFC competition as he returns to professional wrestling - MMA Fighting
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Major Update Quells CM Punk's WWE Return Speculation Despite WWE's Ongoing Teases Over the Weeks - EssentiallySports
CM Punk officially informs UFC of retirement from MMA as he returns to pro wrestling
CM Punk says it's not 'far fetched' for him to believe he can earn a title shot after three or four wins - MMA Fighting
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