The claims of Kentan Road, Tizanillusion and Powder were voided by track stewards in the hour after Sunday's second race.
Tizanillusion won the race for fillies and mares at 5 1-2 furlongs and was claimed in a three-way shake by trainer Doug O'Neill for $32,000. She returns to John Sadler after being reported as unsound after the race, stewards said.
Powder, who finished second, was claimed for $28,000 in a five-way shake by John Martin, but will be returned to Genaro Vallejo. She was reported to have bled.
Kentan Road, who finished fourth, was claimed for $32,000 by Gary Sherlock and returns to Sadler because of unsoundness.