Best Concert, at 2-1, caught Nix Danger in deep stretch to win the third race and open the GP West Rainbow 6.
Bettors added $11,859 to the Rainbow 6 pool. The carryover coming in was $16,423.
The race was an $8,000 claimer at 1 1/16 miles on turf for 3-year-olds and up. Best Concert won in 1:45.29 with Emisael Jaramillo riding for trainer Roger Laurin.