The 2003 WTA Tour Championships, also known by its sponsored name Bank of America WTA Tour Championships Presented by Porsche, was a women's tennis tournament played on indoor hard courts at the Staples Center in Los Angeles, United States. It was the 33rd edition of the year-end singles championships, the 28th edition of the year-end doubles championships, and was part of the 2003 WTA Tour. The tournament was held between November 4 and November 10, 2003. First-seeded Kim Clijsters won the singles event and earned $1,000,030 first-prize money as well as 485 ranking points. With her victory Clijsters became the first female tennis player to earn $US4 million in a season. For the first time since 1978 a round robin system was used, after the men's Tennis Masters Cup. Two groups of four players were formed and each contender had to play three matches. Also, for singles, instead of the top sixteen players qualifying, only top eight qualified for the WTA Tour Championships. For doubles, the top four pairs pairs qualified for the WTA Tour Championships, but still continued with the single elimination format.
The 2002 WTA Tour Championships, also known by its sponsored name Home Depot Championships Presented by Porsche, was a women's tennis tournament played on indoor hard courts at the Staples Center in Los Angeles, United States. It was the 32nd edition of the year-end singles championships, the 27th edition of the year-end doubles championships, and was part of the 2002 WTA Tour. The tournament was held between November 6 and November 11, 2002. Fifth-seeded Kim Clijsters won the singles event and earned $765,000 first-prize money as well as 485 ranking points. Total attendance for the event, held for the first time at the Staples Center, was 56,862.
The 1996 Porsche Tennis Grand Prix was a women's tennis tournament played on indoor hard courts at the Filderstadt Tennis Club in Filderstadt in Germany that was part of Tier II of the 1996 WTA Tour. It was the 19th edition of the tournament and was held from 7 October until 13 October 1996. Eighth-seeded Martina Hingis won the singles title.
The 1997 Porsche Tennis Grand Prix was a women's tennis tournament played on indoor hard courts at the Filderstadt Tennis Club in Filderstadt in Germany that was part of Tier II of the 1997 WTA Tour. It was the 20th edition of the tournament and was held from 6 October through 12 October 1997. First-seeded Martina Hingis won the singles title, her second consecutive at the event.
The 1998 Porsche Tennis Grand Prix was a women's tennis tournament played on indoor hard courts at the Filderstadt Tennis Club in Filderstadt in Germany that was part of Tier II of the 1998 WTA Tour. It was the 21st edition of the tournament and was held from 5 October until 11 October 1998. Unseeded Sandrine Testud won the singles title and earned $79,000 first-prize money.
The 1988 Porsche Tennis Grand Prix was a women's tennis tournament played on indoor hard courts at the Filderstadt Tennis Centre in Filderstadt in West Germany and was part of the Category 4 tier of the 1988 WTA Tour. It was the 11th edition of the tournament and was held from 10 October to 16 October 1988. First-seeded Martina Navratilova won the singles title, her third consecutive and fifth in total.
The 1989 Porsche Tennis Grand Prix was a women's tennis tournament played on indoor carpet courts at the Filderstadt Tennis Centre in Filderstadt, West Germany and was part of the Category 4 tier of the 1989 WTA Tour. It was the 12th edition of the tournament and was held from 9 October to 15 October 1989. First-seeded Gabriela Sabatini won the singles title.
The 1991 Porsche Tennis Grand Prix was a women's tennis tournament played on indoor hard courts at the Filderstadt Tennis Centre in Filderstadt, Germany and was part of the Tier II of the 1991 WTA Tour. It was the 14th edition of the tournament and was held from 14 October to 20 October 1991. Unseeded Anke Huber won the singles title and earned $70,000 first-prize money.
The 1992 Porsche Tennis Grand Prix was a women's tennis tournament played on indoor hard courts at the Filderstadt Tennis Centre in Filderstadt, Germany and was part of the Tier II of the 1992 WTA Tour. It was the 15th edition of the tournament and was held from 12 October to 18 October 1992. On her 36th birthday third-seeded Martina Navratilova won the singles title, her sixth at the event, and earned $70,000 first-prize money.
The 1993 Porsche Tennis Grand Prix was a women's tennis tournament played on indoor hard courts at the Filderstadt Tennis Centre in Filderstadt, Germany and was part of the Tier II of the 1993 WTA Tour. It was the 16th edition of the tournament and was held from 11 October to 17 October 1993. Third-seeded Mary Pierce won the singles title and earned $75,000 first-prize money as well as 300 ranking points.
The 1994 Porsche Tennis Grand Prix was a women's tennis tournament played on indoor hard courts at the Filderstadt Tennis Centre in Filderstadt, Germany and was part of the Tier II of the 1994 WTA Tour. It was the 17th edition of the tournament and was held from 10 October to 16 October 1994. Eighth-seeded Anke Huber won the singles title and earned $80,000 first-prize money as well as 300 ranking points.
The 1995 Porsche Tennis Grand Prix was a women's tennis tournament played on indoor hard courts at the Filderstadt Tennis Centre in Filderstadt, Germany and was part of the Tier II of the 1995 WTA Tour. It was the 18th edition of the tournament and was held from 9 October to 15 October 1995. Seventh-seeded Iva Majoli won the singles title and earned $79,000 first-prize money as well as 300 ranking points.
The 2000 Porsche Tennis Grand Prix was a women's tennis tournament played on indoor hard courts at the Filderstadt Tennis Club in Filderstadt, Germany that was part of Tier II of the 2000 WTA Tour. It was the 23rd edition of the tournament and was held from 2 October until 8 October 2000. First-seeded Martina Hingis won the singles title and earned $87,000 first-prize money.
The 2001 Porsche Tennis Grand Prix was a women's tennis tournament played on indoor hard courts at the Filderstadt Tennis Club in Filderstadt, Germany that was part of Tier II of the 2001 WTA Tour. It was the 24th edition of the tournament and was held from 8 October until 14 October 2001. Third-seeded Lindsay Davenport won the singles title and earned $90,000 first-prize money.
The 2003 Porsche Tennis Grand Prix was a women's tennis tournament played on indoor hard courts at the Filderstadt Tennis Club in Filderstadt, Germany that was part of Tier II of the 2003 WTA Tour. It was the 26th edition of the tournament and was held from 6 October until 13 October 2003. Third-seeded Kim Clijsters won the singles title and earned $98,500 first-prize money.
The 2004 Porsche Tennis Grand Prix was a women's tennis tournament played on indoor hard courts at the Filderstadt Tennis Club in Filderstadt, Germany that was part of Tier II of the 2004 WTA Tour. It was the 27th edition of the tournament and was held from 4 October until 10 October 2004. Second-seeded Lindsay Davenport won the singles title and earned $98,500 first-prize money.
The 2005 Porsche Tennis Grand Prix was a women's tennis tournament played on indoor hard courts at the Filderstadt Tennis Club in Filderstadt, Germany that was part of Tier II of the 2005 WTA Tour. It was the 28th edition of the tournament and was held from 3 October until 9 October 2005. First-seeded Lindsay Davenport won the singles title and earned $98,500 first-prize money.
The 2006 Porsche Tennis Grand Prix was a women's tennis tournament played on indoor hard courts that was part of the Tier II category of the 2006 WTA Tour. The event was relocated to the Porsche-Arena in Stuttgart, Germany after having held all previous editions in Filderstadt. It was the 29th edition of the tournament and was played from 2 October until 8 October 2006. Fourth-seeded Nadia Petrova won the singles title and earned $100,000 first-prize money.
The 2002 SEAT Open was a women's tennis tournament played on indoor hard courts in Kockelscheuer, Luxembourg which was part of Tier III of the 2002 WTA Tour. It was the 7th edition of the tournament and was held from 21 October until 27 October 2002. First-seeded Kim Clijsters won the singles title, her second consecutive title at the event and third in total, and earned $35,000 first-prize money.
Defending champion Lindsay Davenport defeated Amélie Mauresmo in a rematch of the previous year's final, 6–2, 6–4 to win the singles tennis title at the 2005 Stuttgart Open.
Kim Clijsters 
Lindsay Davenport / 
