Broncos 'don't believe' report linking Peyton Manning to HGH

The Denver Broncos are backing Peyton Manning following allegations by Al Jazeera that an Indianapolis clinic sent HGH to the quarterback's wife in 2011 while he was recovering from neck surgery.

"Knowing Peyton Manning and everything he stands for, the Denver Broncos support him 100 percent. These are false claims made to Al Jazeera, and we don't believe the report," the Broncos said in a statement.

"Peyton is rightfully outraged by the allegations, which he emphatically denied to our organization and which have been publicly renounced by the source who initially provided them.

"Throughout his NFL career, particularly during his four seasons with the Broncos, Peyton has shown nothing but respect for the game. Our organization is confident Peyton does things the right way, and we do not find this story to be credible."

The allegation was made as part of a documentary titled "The Dark Side," in which British hurdler Liam Collins "went undercover in an attempt to expose the widespread nature of performance-enhancing drugs in global sports."

Huffington Post obtained an early copy of the documentary, which is set to air Sunday night.