In case you weren't done ruining the legacy of legendary QBs, Peyton Manning has been listed in an Al Jazeera undercover probe as one of several prominent professional athletes who were supplied illegal performance-enhancing drugs from an Indiana-based anti-aging clinic, per ESPN.

Somehow, this feels more serious than Tom Brady deflating footballs.

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The documentary -- set to air on TV on Sunday -- reports Manning was given a supply of HGH in 2011 while recovering from his fourth neck surgery.

Naturally, the Broncos QB denies all allegations.

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"For the record, I have never used HGH. It absolutely never happened. The whole thing is totally wrong," Manning told ESPN's Chris Mortensen. "It's such a fabrication, I'm not losing any sleep over it, that's for sure."

"The allegation that I would do something like that is complete garbage and is totally made up. It never happened. Never. I really can't believe somebody would put something like this on the air. Whoever said this is making stuff up."

NFL Network's Ian Rapoport delved further, finding a link to Manning and the anti-aging clinic in question.

No NFL player has tested positive for HGH since testing was implemented in 2014.

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