Buckingham Stables' 3-year-old filly A Sea Trippi defeated Running Bobcats by 2 ¼ lengths in the $100,000 U Can Do It Handicap for fillies and mares at showery Calder Race Course Saturday.A Sea Trippi took the lead for jockey Eduardo Nunez after a quarter mile of the 6 1/2-furlong race and soon took command, giving trainer Ron Spatz his third win in the five runnings of the U Can Do It. American Miss finished third. Spatz won the race in 2002 and 2003 with Brazil Stable's Chispiski.A Sea Trippi carried 115 pounds, four less than Running Bobcats.Jockey Eduardo Nuñez rode A Sea Trippi to victory over a sloppy track. The Trippi filly covered the distance in 1:18.09. Sent off as the third choice in the field of 10, she paid $12.20, $6.20, and $4.40 in her first start against older competition. Running Bobcats, the 2-to-1 post time favorite, returned $4.40 and $3. American Miss paid $5 to show.The win marked A Sea Trippi's second victory of 2006. Her previous score was in the Harmony Lodge overnight stakes at Calder on May 12 at the same distance of the U Can Do It. Prior to Saturday's race, A Sea Trippi finished fourth in the six-furlong Azalea Breeders' Cup Stakes (gr. III) on Summit of Speed day.