Further enlightenment on the jackpot topic from @CHRBMike from three July 27th tweets which are entirely from his twitter page.

(1) The California Horse Racing Board reviewed the wagering transactions that led to one account holder winning the entire Pick 6 pool Sunday at Del Mar on an $8 ticket. The records show that the account holder placed 8,613 individual wagers totaling $29,652.

(2) All wagers were placed in batches, the last batch approximately 4 minutes before the first leg of the Pick 6. All 8,613 wagers used just one horse in each race, or using the popular wagering terminology, with six singles. However, the denominations of those wagers differed.

(3) Approximately 70 percent were made in the traditional $2 increment. The rest were in various denominations of $4, $6, $8, $10, $12, $14, $16, $24, $26, and $60. The horse that paid $114 and triggered the massive payoff ($173,912) was on only 1 percent of the 8,613 tickets.