Stress Test, the 3-2 favorite, won the GP West fourth race to start the Rainbow 6.
The carryover coming in was $53,579. Bettors added $35,476 in Rainbow 6 bets.
The fourth race was an $8,000 claimer at five furlongs on turf for fillies and mares 3-years-old and up.
Sterss Test shot to an early lead and won in 56.92 seconds. Eddie Castro rode for trainer Jorge Navarro.