Undefeated and unchallenged Flightline, a horse on everybody's radar, continued to prepare for his 4-year-old debut in Santa Anita's Grade 2 San Carlos Stakes March 5, working a half-mile at the Arcadia, Calif., track on Sunday in :47.80 under Juan Leyva. Former jockey Leyva is assistant trainer to John Sadler, who conditions the undefeated son […]