The Gulfstream Park West meet has an eight-race card on Friday, with first post of 1:00 p.m.
on the track at Calder in Miami Gardens.
Conditions are lusted as Fast and Firm There is a 15 percent chance of rain during racing hours.
The carryover on the Rainbow 6 has grown to $58,490. The 20-cent per combination only bet will be on races three to eight with the sequence scheduled to start at 2:00 p.m.
On Thursday there were eight tickets with the winners of all six Rainbow 6 races. Each received $2,976.60.
Program numbers of the winning horses were 9-5-5-1-6-1. All six winners went off at 8-1 or lower.
The carryover coming in was $48,284. Bettors added $42,528 to the Rainbow 6 pool.
Of that meet sponsor Gulfstream Park took out 20 percent. It then distributed 56 percent among the tickets with six winners and added 24 percent to the carryover.
On Friday there are 61 entrants, including Also Eligibles and Main Track Only, in the Rainbow 6 races.
The feature seventh is an allowance, with a $39,000 purse, at seven furlongs on dirt for fillies and mares 3-YO and up.
The other races are claiming or maiden claiming.