ARCADIA, Calif. -- It took until the end of his 5-year-old year for Aggie Engineer to finally win a stakes race, but the way he ran on Saturday, in the Grade 2, $150,000 San Pasqual Stakes at Santa Anita, there could be plenty more to come. In what has to rank as his best performance yet, Aggie Engineer romped to a 3 1/4-length victory after patiently waiting in third, something he was incapable of doing early in his career.