ARCADIA, Calif. – Flightline, the undefeated 4-year-old colt, has resumed training at Santa Anita after he was briefly sidelined with a strained hock in February. Flightline was jogged early Sunday for the second consecutive day, and will resume workouts in April, trainer John Sadler said. The Grade 1 Metropolitan Handicap at a mile at Belmont Park on June 11 remains a late spring goal. For now, Flightline will be eased back into action. “He’ll jog at least a week,” Sadler said. “It’s routine. It’s the mundane part of getting back to where you were.” :: Win big at Santa Anita: Get DRF Past Performances, Picks, Clocker Reports and Betting Strategies.  Flightline is unbeaten, and untested, in three starts, including a win by 11 1/2 lengths in the Grade 1 Malibu Stakes at seven furlongs at Santa Anita on Dec. 26. Flightline had two workouts in late January and early February before he was taken out of training.