A win by Navajo Dreamer ($9.40) in Thursday's eighth race has led to a carryover of $495,962 in the single ticket jackpot pool of the pick six, which is paid only if there is one winning ticket.
The carryover goes to Friday's eight-race program.
Had runner-up Ladybug, the 9-5 favorite, won Thursday's eighth the bet would have been paid out.
The $2 pick six paid $37,405 on Thursday.