ken Roczen Wins in St. Louis as Deegan Clinches 250SX Title
Round 12 of the 2026 Monster Energy AMA Supercross Championship delivered high drama in St. Louis, with championship momentum shifting in the 450 class and a title being secured in the 250 division.
In front of a packed crowd, the night belonged to Ken Roczen, who delivered a flawless ride to take back-to-back victories in the 450SX class, while Haiden Deegan dominated the 250SX East/West Showdown to secure the 250 West Championship.
With technical track conditions and demanding rhythm sections catching riders out throughout the night, consistency and race craft proved decisive across both main events.
The Story of the Night
Qualifying saw several top contenders show early speed, with Roczen and Chase Sexton looking particularly strong heading into the night show. However, the track quickly evolved, becoming increasingly technical and punishing as the event progressed.
In the 250SX Showdown, attention was focused on the championship battle as East and West riders faced off. Cole Davies grabbed the holeshot and initially controlled the race, while Deegan found himself buried in the pack early on.
Deegan wasted no time moving forward, carving through the field before catching Davies and taking control of the race. Once in the lead, he pulled away comfortably, sealing both the race win and the 250 West title in dominant fashion.
The 450SX main event saw Roczen deliver one of his most composed rides of the season. After a strong start, he controlled the race from the front, fending off pressure and maintaining a consistent pace to secure victory.
Behind him, Justin Cooper and Hunter Lawrence battled hard for podium positions, while championship contenders worked through the field on a demanding circuit.
With the win, Roczen tightened the championship fight, setting up an intense run towards the final rounds of the season.
450SX Main Event Results
| Position | Rider |
|---|---|
| 1 | Ken Roczen |
| 2 | Justin Cooper |
| 3 | Hunter Lawrence |
| 4 | Jorge Prado |
| 5 | Cooper Webb |
| 6 | Eli Tomac |
| 7 | Joey Savatgy |
| 8 | Malcolm Stewart |
| 9 | Garrett Marchbanks |
| 10 | Dylan Ferrandis |
250SX East/West Showdown Results
| Position | Rider |
|---|---|
| 1 | Haiden Deegan |
| 2 | Cole Davies |
| 3 | Seth Hammaker |
| 4 | Nate Thrasher |
| 5 | Ryder DiFrancesco |
Championship Implications
The St. Louis round proved pivotal in both classes. Deegan’s victory confirmed his dominance in the 250 West division, securing the championship with rounds to spare and reinforcing his status as one of the sport’s brightest young stars.
In the 450 class, Roczen’s back-to-back wins have reignited the championship battle, closing the gap to the leaders and setting up a thrilling conclusion to the 2026 Supercross season.
With only a handful of rounds remaining, every point will be crucial as the championship fight heads towards its final stages.