The Advanta Championships of Philadelphia (also long known as the Virginia Slims of Philadelphia) was a WTA Tour professional tennis tournament for women played from 1971 through 2005 in Philadelphia, United States. The tournament was classified on the WTA Tour as a Tier I event from 1993 through 1995. It was classified as a Tier II event in 1991, 1992, and from 1996 through 2005. The tournament was played indoors, on carpet from 1991 through 2000, and on hard courts from 1971 through 1979 and from 2003 through 2005. Past singles champions include Conchita Martínez, Margaret Court, Chris Evert, Monica Seles, Steffi Graf, Martina Hingis, Lindsay Davenport, and Amélie Mauresmo. Finals Singles Doubles See also Sports in Philadelphia WTA Tier I Events External links Indoor tennis tournaments Hard court tennis tournaments Carpet court tennis tournaments WTA Tour Sports in Philadelphia Recurring events disestablished in 2005 Defunct tennis tournaments in the United States Virginia Slims tennis tournaments Recurring sporting events established in 1971 1971 establishments in Pennsylvania 2005 disestablishments in Pennsylvania