Trainer John Sadler will know by sundown Wednesday whether his red-hot streak has extended through opening day at Del Mar. From July 1 through Sunday, Sadler won with 11 of 21 starters, including a sweep of the three graded stakes at Betfair Hollywood Park Saturday – the Grade 1 American Oaks with Lady of Shamrock, the Grade 2 A Gleam Handicap with Switch, and the Grade 3 Hollywood Juvenile Championship with Scherer Magic. “It was a good finish to the meet,” Sadler said. Wednesday at Del Mar, Sadler has four runners in the two divisions of the Oceanside Stakes for 3-year-olds on turf – Koast and You Know I Know in the sixth race and Holy Candy and Stoney Fleece in the ninth race. Sadler expects to have a strong meeting at Del Mar, which runs through Sept. 5. In the day’s fifth race, a maiden special weight race for California-breds, Sadler runs the first-time starter Life a Riley. “I think we have a fine bunch of 2-year-olds,” he said. [DEL MAR: Get PPs and watch the full opening-day card live] Switch, 5, earned a fees-paid berth into the Breeders’ Cup Filly and Mare Sprint at Santa Anita on Nov. 2 with her win in the A Gleam. She was second in the BC Filly and Mare Sprint at Churchill Downs in both 2010 and 2011. Sadler said that Switch is likely to start in the $150,000 Rancho Bernardo Handicap over 6 1/2 furlongs at Del Mar on Aug. 19, even though the distance is not ideal. “The 6 1/2 [furlongs] might be a little short for her,” he said. Lady of Shamrock is a candidate for the $300,000 Del Mar Oaks on turf Aug. 18. Sadler and owner Kosta Hronis are considering the BC Filly and Mare Turf at Santa Anita on Nov. 2 for Lady of Shamrock, who has won four turf stakes since Christmas. “We’re excited about her,” Sadler said. “Distance is not a problem.” Hall of Fame jockey Mike Smith rode Lady of Shamrock in the $350,000 American Oaks. He was left with the impression that the filly can show further improvement, suggesting a Breeders’ Cup start may be worth pursuing. “It could be time to think outside the box with her,” Smith said.