Playful Act showed her Oaks credentials when she led nearly all the way in winning the Meon Valley Stud Fillies Mile (Eng-I) at Ascot Saturday.Racing in the the green and blue colors of the late Robert Sangster who bred the 2-year-old filly, the John Gosden-trained daughter of Sader's Wells was ridden to victory by Jimmy Fortune at odds of 11-4. Maids Causeway chased gamely in second with with Dash To The Top finishing third. Favored Echelon finished off the board when lacking a racing room for a late charge under jockey Kieren Fallon.Gosden told Racing Post, "When I went through the race this morning it was obvious that nothing would go off in front and with her proven stamina we decided to make it. She's related to Percussionist and Echoes In Eternity and her pedigree is laden with stamina. She had a moderate draw and that made it more important than ever to get a good position early on."Gosden said he hoped to point Playful Act, who won the May Hill Stakes (Eng-II) at Doncaster earlier this month, to next season's One Thousand Guineas and Vodafone Oaks (both Eng-I).