4 on the Open Era List, trailing only the nine titles of Martina Navratilova and the seven of Serena and Steffi Graf.From the 2000 Wimbledon Championships to the 2001 US Open, Williams won four of the six Grand Slam singles tournaments in that span.3 and eventual champion Jana Novotná in the quarterfinals of Wimbledon. She reached her fifth final of the year at the Bank of the West Classic in Stanford, California, defeating No.6 Monica Seles in the semifinals before losing to No. Patellar tendonitis in her left knee caused her to retire from her quarterfinal match at the tournament in San Diego while trailing Mary Pierce 4–0 in the third set.She was the first woman since Pam Shriver in 1978 to reach a US Open singles final on her first attempt and was the first unseeded US Open women's singles finalist since 1958. In her debut at the Australian Open, Williams defeated younger sister Serena in the second round, which was the sisters' first professional meeting. 2 Davenport for the first time in the semifinals of the IGA Tennis Classic in Oklahoma City.On September 8, 1997, her ranking broke into the top 50 for the first time. Williams eventually lost in the quarterfinals to No. Williams then defeated Joannette Kruger in the final to win the first singles title of her career.At the 2017 Wimbledon Championships, Williams extended her record as the all-time leader, male or female, in Grand Slams played, with 75.
Williams turned professional on October 31, 1994, at the age of fourteen.Her 35-match winning streak from the 2000 Wimbledon Championships to the 2000 Generali Ladies Linz tournament final is the longest since January 1, 2000.She is also one of only three active WTA players to have made the finals of all four Grand Slams, along with Serena and Maria Sharapova.Williams has won four Olympic gold medals, one in singles and three in women's doubles, along with a silver medal in mixed doubles, pulling even with Kathleen Mc Kane Godfree for the most Olympic medals won by a male or female tennis player.She is the only tennis player to have won a medal at four Olympic Games.5 Sánchez Vicario in the semifinals before losing to No. Williams lost again to Hingis in the quarterfinals of the French Open.