A Los Angeles Chargers Riddell Speed Replica NFL Helmet Hand Signed By Melvin Gordon. The Signature and item are in excellent condition. Melvin Gordon III is an American football running back for the Los Angeles Chargers of the National Football League. He played college football at Wisconsin, and was drafted by the Chargers in the first round of the 2015 NFL Draft. AUTHENTICATION: The item is accompanied by a Certificate of Authenticity - Serial Numbered and Databased Hologram - Picture of Melvin from the signing.