Starship Mischief retained her perfect in-the-money percentage with a stylish victory under Diego Sanchez at Chicago's Hawthorne Race Course yesterday. The 4-year-old daughter of Gone Astray went head-and-head for the lead from the two path in the five-furlong race that was originally scheduled for the grass, opened up by 2 1/2 lengths at the quarter pole, then cruised to the wire three lengths in front. The final time of :57.70 is just one second off the track record. Starship Mischief, bred by former NFL defensive back Freddie Hyatt of Ocala, has made five starts, posting two victories, two seconds and a third while competing at Hawthorne, Gulfstream Park, Delta Downs and Sam Houston. She broke her maiden at Delta Downs by 9 1/4 lengths in January.