Acting Lucky (5), the 7-5 favorite, won Gulfstream's sixth race on Saturday to start the Rainbow 6.
That ticket is on Truly Ambitious (14), who is in as an Also Eligible and is 38-1 with sevcn minutes to post.
There are 504 live tickets.
The carryover coming in was $51,988. Bettors added $109,868. That adds up to less than the $200,000 Gulfstream has guaranteed to pay if there is just one ticket with the winners of all six races.