Williams's first professional event was in September 1995, at the age of 13, at the Bell Challenge in Quebec City. She lost in the first round of qualifying to World No. 149 Annie Miller in less than an hour of play and earned US$240 in prize money.
Williams did not play a tournament in 1996. The following year, she lost in the qualifying rounds of three tournaments before winning her first main-draw match in November at the Ameritech Cup Chicago. Ranked World No. 304, she upset World No. 7 Mary Pierce and World No. 4 Monica Seles, recording her first career wins over Top 10 players and becoming the lowest-ranked player in the open era to defeat two Top 10 opponents in one tournament. She ultimately lost in the semifinals to World No. 5 Lindsay Davenport. She finished 1997 ranked World No. 99.
Williams began 1998 at the Medibank International Sydney. As a qualifier ranked World No. 96, she defeated World No. 3 Davenport in the quarterfinals before losing to Arantxa Sánchez Vicario in the semifinals. Williams made her debut in the main draw of a Grand Slam tournament at the Australian Open, where she defeated sixth seeded Irina Spîrlea in the first round before losing to sister Venus in the second round, in the sisters' first professional match. Williams reached six other quarterfinals during the year but lost all of them, including her first match against World No. 1 Martina Hingis at the Lipton International Players Championships in Key Biscayne and her second match against Venus at the Italian Open in Rome. She failed to reach the quarterfinals of any Grand Slam tournament the remainder of the year, losing in the fourth round of the French Open to Sánchez Vicario and the third round of both Wimbledon and the US Open, to Virginia Ruano Pascual and Spîrlea, respectively. She did, however, win the mixed doubles titles at Wimbledon and the US Open with Max Mirnyi, completing the Williams family's sweep of the 1998 mixed doubles Grand Slam tournaments. Williams won her first professional title in doubles in Oklahoma City with Venus, becoming the third pair of sisters to win a WTA title. The Williams sisters won two more doubles titles together during the year. Serena finished the year ranked World No. 20 in singles.
Serena WilliamsSerena Williams
Serena Williams
Serena Williams
Serena WilliamsSerena Williams
Serena Williams
Serena Williams
Serena Williams
Serena Williams
