With purses to exceed $700,000 per day and "Ship and Win" incentives to double, the Del Mar Thoroughbred Club is substantially increasing all overnight purses and offering record incentives for its upcoming Summer Meet, which opens Saturday, July 17, and runs through Labor Day, Sept. 6. Among the increases for overnights from last year, maiden special weight races will jump from $55,000 to $70,000, with a number of maiden claiming and open claiming purses also increasing. In addition, purse levels will be raised for several summer stakes races with the...