Photo by The Racing Biz.

After going unsolved during an all-stakes sequence May 15 capped by Rombauer’s upset victory in the 146th Preakness (G1), Middle Jewel of the Triple Crown, the 20-cent Rainbow 6 will have a Maryland state record jackpot carryover of $562,931 when live racing returns to Pimlico Race Course Thursday.

Post time for the first of eight races is 12:40 p.m.

The jackpot carryover represents a state record amount for the Rainbow 6, which was introduced in Maryland April 2, 2015 on opening day of Pimlico’s spring meet. The previous record carryover reached $345,898.33 spanning 31 racing programs before being solved by one lucky bettor for a life-changing $399,545.94 payout April 15, 2018 at Laurel Park. The winning ticket was purchased through Maine off-track betting.

Multiple tickets with all six winners in the Preakness Day Rainbow 6 each returned $5,940.46. The sequence began with the $100,000 James W. Murphy and was followed by the $100,000 Runhappy Skipat, $100,000 Jim McKay Turf Sprint, $150,000 Maryland Sprint (G3), $250,000 Dinner Party (G2) and Preakness. (For more on the weekend’s racing, click here).

The Rainbow 6 jackpot is paid out only when there is a single unique ticket sold with all six winners. On days when there is no unique ticket, 60 percent of that day’s pool goes back to those bettors holding tickets with the most winners while 40 percent is carried over to the jackpot pool.

Thursday’s sequence spans Races 3-8 and includes the featured Race 7, a six-furlong entry-level allowance for fillies and mares 3 and up led by Mark B. Grier’s Sosua, the even-money program favorite. Purchased for $260,000 as a yearling in September 2018 and trained by Arnaud Delacour, the 4-year-old Speighstown filly won her March 31 unveiling at Tampa Bay Downs by 12 ¾ lengths under Hector Diaz Jr., who returns to ride from Post 1 in the field of six.

Pimlico will present nine races Friday, and its finale – a five-furlong turf sprint allowance for 3-year-olds and up – kicks off the weekly national Stronach 5 wager that continues with Race 9 from Gulfstream Park, Race 3 from Santa Anita and Race 3 from Golden Gate Fields before wrapping up with Santa Anita’s Race 4.

The minimum wager on the multi-race, multi-track Stronach 5 is $1. If there are no tickets with five winners, the entire pool will be carried over to the next Friday.

The Maryland Jockey Club serves as host of the Stronach 5.