Al Jazeera America aired a bombshell documentary on Sunday night that put the ratings-starved cable news channel in the spotlight. But it also ignited something with which AJAM is quite familiar at this point: Controversy.

The documentary, titled "The Dark Side: Secrets of the Sports Dopers," linked a number of professional athletes, including NFL great Peyton Manning, to performance-enhancing drugs.

A man claiming to have been affiliated with the Guyer Institute of Molecular Medicine in Indianapolis was secretly recorded saying that the clinic mailed human growth hormone to Manning's wife, Ashley, to ensure that the legendary quarterback was never connected.

Manning, along with other athletes implicated in the report, vehemently denied the claims. On Sunday night, Manning said that he will "probably" sue Al Jazeera.

Charlie Sly, the central source of the allegations, has recanted the statements he made to Al Jazeera's undercover reporter.

Sly told ESPN that he "made up" the story about Manning. He also said that he isn't a pharmacist and didn't work at the Guyer Institute in 2011 when Manning allegedly procured HGH, a drug that is banned by the NFL. Public records show that Sly was a licensed pharmacy intern in Indiana from 2010 until 2013.