I'm a Rockstar (4), at 50-1, won Thursday's fourth race at Gulfstream Park--starting the Rainbow 6.
The carryover coming in was $816,547. Bettors added $271,474 to the Rainbow 6 pool.
Amadora (2), at 2-1, won the fifth race to start the Late Pick 5 and continue the Rainbow 6. Bettors put $257,849 into the Late Pick 5, which did not have a carryover.
A longshot win in the first-leg race enhances the prospect that there might be just one ticket with all six Rainbow 6 winners.
The formula for calculating the payoff produces a jackpot of about $1.03 milllion (all of the carryover plus 80 pecent of the day's new Rainbow 6 bet).
Gulfstream has guaranteed that the pool will be at least $1.35 million if there is just one ticket with all six winners.
If there are multiple winning Rainbow 6 tickets, Gulfstream takes out 20 percent of the day's Rainbow 6 bet and then adds 24 percesnt to the carryover while dividing 56 percent among winning tickets.