The dirt track is listed as fast and the turf is listed as Firm on Thursday for the eight-race card at the Gulfstream Park West meet.
First post is 1:15 p.m. at Calder in Miami Gardens.
Rain has been falling on-and-off at Calder during the morning.
The Weather Channel forecast is for a 50 percent chance of thunderstorms during racing hours.
The first, third, fifth, seventh and eighth races are scheduled for turf, with the rail at ten feet.
*The carryover on the Rainbow 6 is $31,678. It begins on the third race, with scheduled post of 2:21 p.m.
Wednesday was the seventh day of the GP West meet. And the seventh day without the jackpot payoff requirement of just one ticket with the winners of all six Rainbow 6 races.
The jackpot consists of the full carryover plus 80 percent of new bets on the Rainbow 6.
On Wednesday, there were 14 Rainbow 6 tickets with all six winners. Each received $1,075.32 on the 20-cent only bet.
Wagering on the Rainbow 6 was $27,154. Under the rules
for non-jackpot days, Gulfstream took out 20 percent of that amount, divided 56 percent among winning tickets and added 24 percent to the carryover.