Eli Tomac crashed his CRF250 on Lap 5 at O.co Coliseum in Oakland, Calif., last Saturday.
It was the first time Tomac hasn't won in the 2013 Monster Energy Western Regional 250 Supercoss Class season.
Tomac's demise was Germany's Ken Roczen's (Red Bull KTM's) fortune. He won Round 4 to move into first-place in the 250 SX West standings with 91 points.
Tomac, racing for GEICO Honda, crashed in the whoops section and couldn't finish the race. He is now third in the overall standings at 76 points. Cole Seely is second with 80 points.
Tomac had went 3-for-3 in season's first races. The Cortez native will look to get back on track at Angel Stadium in Anaheim for Round 5 on Saturday.
Tomac is 2-for-2 in Anaheim, Calif., this season.