Peyton Manning denies doping allegations

Legendary NFL quarterback Peyton Manning is vehemently denying Al Jazeera’s allegations he used human growth hormones during his recovery for neck surgery in 2011. He is also threatening to take legal action for claims in their investigative report. Denver Post NFL Reporter Troy Renck and MSNBC’s Chief Legal Correspondent Ari Melber join Craig Melvin.Dec. 28, 2015