James Stewart (Yamaha) took his fourth victory of the 2011 AMA Supercross championship season in front of more than 59,000 fans inside the Edward Jones Dome in St Louis.

Ivan Tedesco (Kawasaki) was the fastest driver at the start of the Class 450 main event and grabbed the holeshot still having to content with Ryan Dungey (Suzuki) and Stewart following close by. On Lap 2, Stewart had already worked his way around Tedesco while Dungey would do the same one lap later.

Tough break for Honda’s Chad Reed who, while riding in third place, ran off the course, which allowed Monster Energy Kawasaki’s Ryan Villopoto to take over the number three position.

Stewart held on for the win, snapping an eight-race winless streak. Series champion Dungey finished second and Villopoto third.

After the St Louis event, Villopoto now leads Dungey in the championship by a mere five points. Next round to be run at the Qwest Field in Seattle next week-end.

AMA Supercross Class 450 Results - St. Louis
Pos. Rider Bike
1. James Stewart Yamaha
2. Ryan Dungey Suzuki
3. Ryan Villopoto Kawasaki
4. Chad Reed Honda
5. Trey Canard Honda
6. Kevin Windham Honda
7. Davi Millsaps Yamaha
8. Ivan Tedesco Kawasaki
9. Austin Stroupe Yamaha
10. Andrew Short KTM

AMA Supercross Class 450 Season Standings – After 14 rounds
Pos. Rider Bike Points
1. Ryan Villopoto Kawasaki – 275
2. Ryan Dungey Suzuki – 270
3. Chad Reed Honda – 267
4. James Stewart Yamaha – 259
5. Trey Canard Honda – 255