Punters are chasing a $33 million Mark Six jackpot and a Triple Trio horse racing jackpot starting at $20 million. The Mark Six jackpot is up for grabs tonight in the Dragon Boat Festival Snowball draw. Those who miss out tonight can turn their punting skills to the horses tomorrow. The Jockey Club has topped up the Triple Trio jackpot to $20 million for the last Happy Valley race meeting of the season. The final meeting of the horse racing season is at Sha Tin this weekend.