Falcon Harbor, at 17-1, won Gulfsream's sixth race to start the Friday Rainbow 6.
The carryover coming in was $107,071. Bettors added $43,482 to the pool.
With veteran Leroy Nelson riding, Falcon Harbor won the seven-furlong dirt race in 1:24,68.
Prior to the race, the dirt track was upgraded from muddy to good.
The turf remains listed as good. Races six, eight and ten are on turf.