The 20-cent Rainbow 6 Jackpot Pool is expected to grow to an estimated $550,000 Sunday at Gulfstream Park, where the popular multi-race wager went unsolved Saturday for the 11h racing day ...

The 20-cent Rainbow 6 jackpot pool continued to swell Saturday at Gulfstream Park, where the popular multi-race wager went unsolved for the seventh consecutive racing day. The Rainbow 6 jackpot ...