Haiden Deegan Answers Back with Commanding San Diego Supercross Victory
Monster Energy Yamaha Star Racing continues to lead the way in the 250SX West Championship as Deegan wins and Mosiman completes a double-podium night / Jan 20, 2026 /
Monster Energy Yamaha Star Racing’s Haiden Deegan reclaimed his spot at the top of the 250SX West Championship with an emphatic victory at Snapdragon Stadium in San Diego, California. The team as a whole continued to show strength in the Western Divisional 250 class at Round 2 of Monster Energy AMA Supercross, with Michael Mosiman joining Deegan on the podium in third and Max Anstie pushing on to finish fifth.
After a frustrating opener in Anaheim, Deegan wasted no time reminding everyone why he’s the reigning champion. The Southern Californian put together a perfect day in front of the home crowd, setting the fastest 250 qualifying time, winning his heat race, and then scoring a commanding Main Event victory. Leading with authority, Deegan crossed the line 7.6 seconds clear of the competition to earn his eighth career 250SX victory and leave San Diego with the red plate.
“This is what I had on the goal list – a perfect day,” Deegan said. “Fastest in qualifying, a perfect heat race, and a perfect main. I wish I could’ve shown this last week because I worked my butt off, but that’s the nice thing about racing, we get to come back swinging the next weekend.”
Mosiman also made improvements in San Diego, a place where he has enjoyed success in the past. In the heat race, the Californian was third in a Monster Energy Yamaha Star Racing 1-2-3 finish. Despite a less-than-ideal start to the Main Event, Mosiman went to work early, slicing his way into the top five by the second lap. After advancing to fourth following his teammate’s crash, he stayed locked in during a multi-rider battle. With five laps to go, Mosiman capitalized on a mistake ahead, moving into third and running a strong pace to secure his first podium of the season.
“San Diego’s always been good to me,” Mosiman said. “I got my first win here, so there are always good feelings when I come here. I didn't get a great start in the main, but I made some really good moves early and just kept on it lap after lap, and was there all the way to the end. I wish we had gotten one more spot, but it was really close. I’m happy to start the season with two solid finishes and put myself in the points hunt. We’ll keep it rolling to A2.”
Coming into the weekend with the red plate, Anstie was off to a strong start, grabbing the holeshot in his heat race and finishing runner-up. The British rider backed that up with another holeshot in the main event, leading the first six laps. Unfortunately, contact with his teammate while battling up front sent Anstie to the ground. He rejoined in fifth and kept pushing, briefly advancing to fourth before being pushed wide by the competition. Anstie ultimately brought it home fifth, earning valuable points in the title chase.
“I genuinely didn’t want to play that game, but it is what it is,” Anstie said. “I know who I’m racing against. I’m a big boy and have to take it on the chin. There are a lot of positives to pull from tonight—my starts were great, and we’re right there. We’ll regroup, focus on ourselves, and go again next weekend.”
With two rounds complete, Monster Energy Yamaha Star Racing continues to lead the way in the 250SX West Championship. Deegan heads to Anaheim 2 with a one-point advantage over Anstie, while Mosiman sits just six points back in fourth.
“It was an awesome day,” said Wil Hahn, the Monster Energy Yamaha Star Racing 250 Team General Manager. “We made good progress from last weekend, got another win, and still had all three guys in the top five. We're 1-2 in the championship, and Mosi (Michael Mosiman) got on the podium tonight. Let's keep the momentum going.”