For 10 years, the final highlight of the ATP season was the ATP Tour World Championship. From 1990 to 1995, it was played in Frankfurt, Germany, before moving to Hannover in 1996.

The inaugural tournament was won by Andre Agassi, who defeated world No. 1 and 1989 Masters champion Stefan Edberg. Pete Sampras, who was to dominate the event throughout the '90s collecting five out of ten titles, captured his first title in 1991 - his second big win after his surprise triumph at the 1990 U.S. Open. On his way to the title he defeated Wimbledon champion Michael Stich, Andre Agassi, Ivan Lendl and Jim Courier in the final.

Jim Courier had no luck in the finals. One year after losing to Sampras, he was defeated by local hero Boris Becker who secured his second year-end title. Home domination continued in 1993, when Michael Stich marched through the tournament without losing a match - making him the only undefeated champion in the 1990s.

Pete Sampras was back to claim his second title in 1994 with a win over Becker; in 1995, Michael Chang managed to survive the round robin stage for the first time and eliminated Sampras to reach the final, where Boris Becker proved too strong for him. The German won the last title in Frankfurt.

In 1996, the tournament moved to the EXPO 2000 Tennis Dome in Hannover. Becker reached his third consecutive final, but once again Pete Sampras was a little bit better, defeating the German in an epic five-setter that went down in tennis history as one of the best indoor matches ever.

Sampras repeated his impressive performance in 1997, when he defeated Yevgeny Kafelnikov on the Russian's first final appearance. There was a surprise final in 1998 when two Spaniards - Alex Corretja and Carlos Moya reached the final in a rematch of the Roland Garros final. Moya had won on clay, but indoors, Corretja got his revenge and won the final after being down 0-2.

Pete Sampras crowned himself King of Hannover in 1999, by claiming his fifth title in ten years with an impressive 6-1, 7-5, 6-4 win over Andre Agassi.

ATP Tour World Championships (1990-1999)

1999/Hannover, Germany -- 23-28 November 1999 -- Surface: Hard
White Group: Thomas Enqvist, Yevgeny Kafelnikov, Nicolas Kiefer, Todd Martin. Red Group: Andre Agassi, Gustavo Kuerten, Nicolas Lapentti, Pete Sampras. Round Robin: Agassi d. Lapentti 61 62; Kafelnikov d. Martin 64 16 61; Sampras d. Kuerten 62 63; Agassi d. Samptras 62 62; Kuerten d. Lapentti 61 62; Enqvist d. Kiefer 64 75; Kafelnikov d. Enqvist 75 36 64; Kiefer d. Martin 63 62; Agassi d. Kuerten 64 75; Martin d. Enqvist 64 61; Kiefer d. Kafelnikov 61 46 62; Sampras d. Lapentti 76(2) 76(5). Semifinals: Agassi d. Kafelnikov 64 76(5); Sampras d. Kiefer 63 63. Final: Sampras d. Agassi 61 75 64. Prize Money: Sampras (4-1) $1,385,000; Agassi (4-1) $800,000; Kafelnikov (2-2) $315,000; Kiefer (2-2); 315,000; Enqvist (1-2) $200,000; Kuerten (1-2) $200,000; Martin (1-2) $200,000; Lapentti (0-3) $85,000; Krajicek (alt) $50,000.

1998/Hannover, Germany -- 24–29 November 1998 -- Surface: Hard
White Group: Marcelo Rios, Andre Agassi, Alex Corretja, Tim Henman, Greg Rusedski (alt.), Albert Costa (alt.).
Red Group: Pete Sampras, Carlos Moya, Karol Kucera, Yevgeny Kafelnikov. Round Robin: Sampras d. Kafelnikov 62 64; Moya d. Kucera 67(5) 75 63; Henman d. Rios 75 61 (Rios withdrew, replaced by Costa); Corretja d. Agassi 57 63 21 Ret. (Agassi withdrew, replaced by Rusedski); Sampras d. Moya 63 63; Kafelnikov d. Kucera 67(3) 63 62; Henman d. Corretja 76(4) 67(4) 62; Rusedski d. Costa 76(5) 61; Sampras d. Kucera 62 61; Moya d. Kafelnikov 75 75; Rusedski d. Henman 62 64; Corretja d. Costa 62 64. Semifinals: Corretja d. Sampras 46 63 76(3); Moya d. Henman 64 36 75. Final: Corretja d. Moya 36 36 75 63 75. Prize Money: Corretja (4-1) $1,360,000; Moya (3-2) $660,000; Sampras (3-1) $415,000; Henman (2-2) $305,000; Rusedski (2-0 as alternate) $260,000; Kafelnikov (1-2) $195,000; Kucera (0-3) $85,000; Agassi (0-1) $40,000; Rios (0-1) $40,000; Costa (0-2 as alternate) $20,000.

1997/Hannover, Germany -- 11–16 November 1997 -- Surface: Hard
White Group: Michael Chang, Jonas Bjorkman, Yevgeny Kafelnikov, Sergi Bruguera, Tim Henman (alt.) Red Group: Pete Sampras, Patrick Rafter, Greg Rusedski, Carlos Moya, Thomas Muster (alt.). Round Robin: Moya d. Sampras 63 67(4) 62; Rafter d. Rusedski 46 63 64; Chang d. Bruguera 76(8) 62; Sampras d. Rusedski 64 75; Kafelnikov d. Bjorkman 63 76(6); Rafter d. Moya 64 62; Kafelnikov d. Chang 63 60; Bjorkman d. Bruguera 63 61; Moya d. Muster 62 63; Sampras d. Rafter 64 61; Henman d. Kafelnikov 64 64. Semifinals: Sampras d. Bjorkman 63 64; Kafelnikov d. Moya 76(2) 76(3). Final: Sampras d. Kafelnikov 63 62 62.
Prize Money: Sampras (4-1) $1,340,000; Kafelnikov (3-2) $640,000; Bjorkman (2-2) $280,000; Rafter (2-1) $280,000; Moya (2-2) $280,000; Chang (1-2) $180,000; Henman (1-0 as alternate) $100,000; Bruguera (0-2) $80,000; Rusedski (0-2) $80,000; Muster (0-1 as alternate) $40,000.

1996/Hannover, Germany -- 19–24 November 1996 -- Surface:Carpet
White Group: Michael Chang, Goran Ivanisevic, Thomas Muster, Richard Krajicek. Red Group: Pete Sampras, Yevgeny Kafelnikov, Boris Becker, Andre Agassi, Thomas Enqvist (alt). Round Robin: Krajicek d. Chang 64 64; Becker d. Kafelnikov 64 75; Ivanisevic d. Muster 64 64; Muster d. Chang 64 63; Sampras d. Agassi 62 61(Agassi withdrew, replaced by Enqvist); Ivanisevic d. Krajicek 64 67(4) 76(1); Chang d. Ivanisevic 67(8) 76(5) 61; Becker d. Sampras 76(1) 76(4); Kafelnikov d. Enqvist 63 76(5); Krajicek d. Muster 76(4) 67(5) 63; Sampras d. Kafelnikov 64 64. Semifinals: Sampras d. Ivanisevic 67(6) 76(4) 75; Becker d. Krajicek 67(4) 76(3) 63. Final: Sampras d. Becker 36 76(5) 76(4) 67(11) 64. Prize Money: Sampras (4-1) $1,340,000; Becker (3-2) $640,000; Ivanisevic (2-2) $280,000; Krajicek (2-2) $280,000; Kafelnikov (1-2) $180,000; Chang (1-2) $180,000; Muster (1-2) $180,000; Enqvist (1-1 as alternate) $140,000; Agassi (0-1) $80,000.

1995/Frankfurt, Germany -- 14–19 November 1995 -- Surface: Carpet
White Group: Pete Sampras, Boris Becker, Yevgeny Kafelnikov, Wayne Ferreira. Red Group: Thomas Muster, Michael Chang, Jim Courier, Thomas Enqvist. Round Robin: Sampras d. Kafelnikov 63 63; Becker d. Ferreira 46 62 76(5); Chang d. Muster 46 62 63; Enqvist d. Courier 63 62; Sampras d. Becker 62 76(3); Kafelnikov d. Ferreira 36 76(5) 61; Enqvist d. Chang 63, 62; Courier d. Muster 64 46 64; Ferreira d. Sampras 76(1) 46 63; Chang d. Courier 62 75; Becker d. Kafelnikov 64 75; Enqvist d. Muster 64 67(3) 64. Semifinals: Chang d. Sampras 64 64; Becker d. Enqvist 64 67(5) 75. Final: Becker d. Chang 76(3) 60 76(5) Prize Money: Becker (4-1) $1,225,000; Chang (3-2) $575,000; Enqvist (3-1) $345,000; Sampras (2-2) $255,000; Ferreira (2-1) $255,000; Courier (1-2) $165,000; Muster (0-3) $75,000; Kafelnikov (0-3) $75,000.

1994/Frankfurt, Germany -- 15–20 November 1994 -- Surface: Carpet
White Group: Boris Becker, Pete Sampras, Stefan Edberg, Goran Ivanisevic. Red Group: Andre Agassi, Sergi Bruguera, Michael Chang, Alberto Berasategui. Round Robin: Bruguera d. Chang 76(1) 75; Becker d. Ivanisevic 63 36 76(5); Agassi d. Berasategui 62 60; Chang d. Berasategui 61 60; Becker d. Sampras 75 75; Edberg d. Ivanisevic 63 64; Sampras d. Edberg 46 63 76(3); Agassi d. Chang 64 64; Bruguera d. Berasategui 63 62; Sampras d. Ivanisevic 63 64; Becker d. Edberg 67(3) 64 75; Agassi d. Bruguera 64 16 63. Semifinals: Sampras d. Agassi 46 76(5) 63; Becker d. Bruguera 67(5) 64 61. Final: Sampras d. Becker 46 63 75 64.
Prize Money: Sampras (4-1) $1,225,000; Becker (4-1) $665,000; Agassi (3-1) $345,000; Bruguera (2-2) $255,000; Chang (1-2) $165,000; Edberg (1-2) $165,000; Berasategui (0-3) $75,000; Ivanisevic (0-3) $75,000.

1993/Frankfurt, Germany -- 16–21 November 1993 -- Surface: Carpet
Arthur Ashe Group: Pete Sampras, Sergi Bruguera, Stefan Edberg, Goran Ivanisevic. Stan Smith Group: Jim Courier, Michael Stich, Andrei Medvedev, Michael Chang. Round Robin: Chang d. Courier 64 60; Stich d. Medvedev 63 64; Edberg d. Bruguera 62 64; Sampras d. Ivanisevic 63 46 62; Stich d. Chang 46 76(3) 62; Medvedev d. Courier 63 16 76(4); Ivanisevic d. Bruguera 64 76(4); Sampras d. Edberg 63 76(3); Medvedev d. Chang 26 64 62; Sampras d. Bruguera 63 16 63; Ivanisevic d. Edberg 76(3) 67(5) 63; Stich d. Courier 75 64. Semifinals: Sampras d. Medvedev 63 63; Michael Stich d. Goran Ivanisevic 76(2) 76(10).
Final: Stich d. Sampras 76(3) 26 76(7) 62. Prize Money: Stich (5-0) $1,240,000; Sampras (4-1) $610,000; Ivanisevic (2-2) $225,000; Medvedev (2-2) $225,00; Chang (1-2) $145,000; Edberg (1-2) $145,000; Bruguera (0-3) $65,000; Courier (0-3) $65,000.

1992/Frankfurt, Germany -- 17–22 November 1992 -- Surface: Carpet
Rod Laver Group: Jim Courier, Goran Ivanisevic, Michael Chang, Richard Krajicek. Ken Rosewall Group: Stefan Edberg, Pete Sampras, Petr Korda, Boris Becker. Round Robin: Edberg d. Korda 63 76(9); Sampras d. Becker 76(5) 76(3); Ivanisevic d. Chang 76(4) 62; Courier d. Krajicek 67(4) 76(1) 75; Sampras d. Edberg 63 36 75; Becker d. Korda 64 62; Krajicek d. Chang 26 63 76(4); Ivanisevic d. Courier 63 63; Sampras d. Korda 36 63 63; Courier d. Chang 75 62; Becker d. Edberg 64 60; Ivanisevic d. Krajicek 64 63. Semifinals: Courier d. Sampras 76(5) 76(4); Becker d. Ivanisevic 46 64 76(7). Final: Becker d. Courier 64 63 75.
Prize Money: Becker (4-1) $1,090,000; Courier (3-2) $465,000; Ivanisevic (3-1) $270,000; Sampras (3-1) $270,000; Edberg (1-2) $130,000; Krajicek (1-2) $130,000; Chang (0-3) $60,000; Korda (0-3) $60,000.

1991/Frankfurt, Germany -- 12–17 November 1991 -- Surface: Carpet
Ilie Nastase Group: Jim Courier, Ivan Lendl, Guy Forget, Karel Novacek. John Newcombe Group: Boris Becker, Michael Stich, Pete Sampras, Andre Agassi. Round Robin: Courier d. Novacek 67(6) 76(5) 64; Lendl d. Forget 62 64; Agassi d. Becker 63 75; Forget d. Novacek 63 76(3); Sampras d. Stich 62 76(3); Lendl d. Courier 62 63; Sampras d. Agassi 63 16 63; Becker d. Stich 76(1) 63; Lendl d. Novacek 62 62; Courier d. Forget 76(4) 64; Becker d. Sampras 64 67(3) 61; Agassi d. Stich 75 63. Semifinals: Sampras d. Lendl 62 63; Courier d. Agassi 63 75. Final: Sampras d. Courier 36 76(5) 63 64. Prize Money: Sampras (4-1) $1,020,000; Courier (3-2) $395,000; Lendl (3-1) $235,000; Agassi (2-2). $175,000; Becker (2-1) $175,000; Forget (1-2) $115,000; Novacek (0-3) $55,000; Stich (0-3) $55,000.

1990/Frankfurt, Germany -- 13–18 November 1990 -- Surface: Carpet
Arthur Ashe Group: Stefan Edberg, Andre Agassi, Pete Sampras, Emilio Sanchez. Cliff Drysdale Group: Boris Becker, Ivan Lendl, Andres Gomez, Thomas Muster. Round Robin: Edberg d. Sanchez 67(4) 63 61; Agassi d. Sampras 64 62; Lendl d. Muster 63 63; Sampras d. Sanchez 62 64; Becker d. Gomez 46 63 63; Edberg d. Agassi 76(4) 46 76(5); Lendl d. Gomez 64 61; Becker d. Muster 75 64; Agassi d. Sanchez 60 63; Becker d. Lendl 16 76(2) 64; Edberg d. Sampras 75 64; Muster d. Gomez 75 57 64. Semifinals: Edberg d. Lendl 64 62; Agassi d. Becker 62 64. Final: Agassi d. Edberg 57 76(5) 75 62. Prize Money: Agassi (4-1) $950,000; Edberg (4-1) $400,000; Becker (3-1) $200,000; Lendl (2-2) $150,000; Sampras (1-2) $100,000; Muster (1-2) $100,000; Gomez (0-3) $50,000; Sanchez (0-3) $50,000.

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