With a hard rain falling as day turned into night, the San Diego Supercross in Qualcomm Stadium was poised to be a treacherous affair – and it was. The rain falling in buckets as the 450 main event was set to take place, it all went wrong for series leader Ryan Dungey and challenger Monster Energy/Kawasaki’s Ryan Villopoto in the greasy first turn when both riders lost their way and hit the mud in a heap. Both were able to rise up out of the slop and get going, but it would be a 20-lap struggle for the duo.

Meanwhile, up at the front and out of the flying mud was Monster/Kawasaki’s Nick Wey (substituting for the injured Chad Reed) who held sway the first two laps of the main before giving way to Honda’s Davi Millsaps. Soon after, Honda’s Andrew Short and Valli Motorsports Yamaha rider Ivan Tedesco were also through.

Millsaps continued to motor away, winning the race with a consistent, trouble free ride.

“Yeah it was a good night for me,” said Millsaps. “I came out on top. American Honda is the best crew in world. The tack was slick. You had to just be smooth, consistent and make no mistakes and that’s what I did. It was such an amazing race and I can’t explain how good it feels.”

Short crashed on the white flag lap allowing Yamaha’s Josh Hill – who had charged through the pack – to take second. Tedesco held on for third after an exciting last lap. Further back, Villopoto was able to get all the way back to fourth while Justin Brayton was fifth. Dungey sliced his way through the pack up to sixth place, followed by Tommy Hahn, Grant Langston, Wey and Kyle Chisholm. Dungey's top-ten finish lets him hang on to his championship lead, though he is only four points ahead of Hill (105 to 104).

GEICO Powersports Honda's Trey Canard stole holeshot from Monster Energy/Pro Circuit/Kawasaki rider Jake Weimer to start the 15-lap 250 main, the two clashing on the opening lap. Canard ended up in the mud while Weimer rode away to victory.

Honda’s Blake Wharton then moved into second with DNA Shred Stix/Division 7 Yamaha rider Max Anstie in third. However Anstie and Wharton eventually rammed one another with Wharton being punted off the track.

Anstie attempted to reel in Weimer, while in third Troy Lee Designs Honda duo of Cole Seely and Wil Hahn ran third and fourth.

On the last lap, Anstie tried an inside line in an attempt to get a wheel in on Weimer, but the Yamaha rider slid out, losing two positions to Seely and Hahn before the checkered flag. Anstie recovered to finish fourth followed by his teammate Broc Tickle, who ran a solid but lonely fifth for much of the race. Josh Hansen's heartbreaking run of bad luck just kept on rolling in San Diego as he was mired in a first-turn mess. From a dead-last start, though, he was able to continually pick off riders and find his way into the top-ten at the finish.