Beginning July 5th, Thistledown will offer a 7% purse increase on $10,000 claiming races and above and a 5% purse increase on those races under $10,000. The purse increase is a direct effect of increased field size, export handle and record-breaking Triple Crown and Ohio Derby days, according to a release from the track. Bill Murphy, Thistledown's vice-president and general manager, says the horsemen's cooperation with the Ohio racing program is appreciated and they are deserving of the purse increase. "We're enjoying a successful season," says Murphy. "Because of the great cooperation from our local horsemen, field size has increased and this goes to show with fuller fields comes increases in purses."