Last month, the California Horse Racing Board (CHRB) issued a complaint against trainer Richard Baltas alleging that between Apr. 15 and May 8 this year, 23 horses in his care had been administered on race-day a substance containing the plant extracts higenamine and paenol in violation of the board's rules. A hearing on the complaint, originally scheduled for early and then possibly late July, is now set for Aug. 3 with the Del Mar stewards beginning at 9 a.m., according to CHRB spokesperson, Mike Marten, in an email Friday afternoon....