RX Films: San Diego, Mitch Payton February 20, 2011, 1:15am Matt Francis Home Supercross Multimedia Video Racer X Films RX Films: San Diego, Mitch Payton - Supercross San Diego, CA San DiegoMonster Energy AMA Supercross Championship Mitch Payton doesn't like the mud. Payton talks about tonight's race, an update on his team's status, and Ping's lack of mud riding skills.