The 20-cent Rainbow 6 jackpot pool for Thursday’s program at Gulfstream Park will be guaranteed at $4 million, the track announced, as it nears a mandatory payout should no better solve the sequence with a unique ticket.

Multiple tickets with six winners Monday kept the jackpot growing for a 38th consecutive race day during the Championship Meet. You can find a complete listing of Gulfstream Park results here. On days when there is no unique ticket, 70 percent of that day’s pool goes back to those bettors holding tickets with the most winners, while 30 percent is carried over to the jackpot pool.

A mandatory payout of the Rainbow 6 pool is scheduled for Sunday, when the entire pool will be shared by those ticket holders with the most winners.

Should the Rainbow 6 continue to go unsolved through Saturday’s Pegasus World Cup day card, the pool is expected to exceed $10 million.