Atomicseventynine will return to action in Friday’s fourth race at Santa Anita, a one-mile optional claimer. It will be her first start since a first-place finish by 5 1/4 lengths in a one-mile race March 28 at Santa Anita. The second- and third-place finishers from that maiden race came back to win their next starts. Get the Key Race report as part of DRF Plus. Sign up for DRF Plus here.