Horse Racing Notes Bill Shoemaker, who at 55 is enjoying his best year for total purses, went over the $7-million mark Saturday when he rode General at War to victory in the sixth race. Shoemaker's best previous year was 1981, when he won the Arlington Million with John Henry and finished with $6.1 million in purses. . . . General at War, a 3-year-old making his first start, is a son of General and Luna De Miel, whose earlier mating resulted in Lord at War, whom Shoemaker rode to victory in the 1985 Santa Anita Handicap. . . . Twilight Ridge, fourth in Sunday's third race, has not won since she took the Breeders' Cup Juvenile Fillies Stakes at Aqueduct in November of 1985. . . . J.D. Canyon flipped in the gate at the start of the ninth race, but she was considered an official starter for betting purposes because the race started and her stall door opened just before the incident. . . . There has been a reversal by the stewards regarding the riding status of Vicky Aragon. Despite a five-day suspension at Bay Meadows, the Santa Anita stewards have ruled that she will be able to ride here on Tuesday and Wednesday.