Rockstar/Makita/Suzuki’s Ryan Dungey, of Belle Plaine, Minn., won his fifth AMA Supercross class main event of the 2010 Monster Energy AMA Supercross, an FIM World Championship, season at the Edward Jones Dome in front of 59,882 fans. TiLube/Babbits/Kawasaki’s Nick Wey, of Murrieta, Calif., won the Spike Holeshot Award to start the AMA Supercross class main event. Dungey and Red Bull/Honda Racing’...