To their credit, the owners of Santa Anita Park have put in place groundbreaking reforms. They have cut in half the allowable dose of the diuretic Lasix, which nearly every horse in this country races on, and plan to phase out its use over time. They have restricted the use of pain medications, which can mask an injury. They have increased the time that a horse must be on site before a race. The park has even sought to forbid jockeys from using their crops to whip horses into running faster, although the California Horse Racing Board must sign off on that. And they did all that in the face of opposition from some trainers and owners.