ATP International Series Gold (known from 1990 to 1999 as the ATP Championship Series) was a series of professional tennis tournaments held internationally between 2000 and 2008 that were part of the ATP Tour. The tournaments were positioned below the ATP Masters Series, and above the ATP International Series in terms of prize money and ranking points available.

International Series Gold tournaments offered players cash prizes (purses from $755,000 to $1,426,250 as of 2008) and the ability to earn ATP ranking points. See Association of Tennis Professionals#ATP rankings for more details.

Effective in 2009, this series of tournaments became the ATP Tour 500, incorporating many of the same tournaments. The "500" represents the number of ATP ranking points earned by the winner of each event in the series.

History In 1989 the ITF Grand Prix Circuit and WCT Circuit were both discontinued. Its tournaments were absorbed into the new ATP Tour in 1990.

The new tour was made up of three global series (tiers) of tournaments, the ATP Championship Series (Single Week), the ATP Championship Series this tier and the ATP World Series.

The nine most prestigious Grand Prix Super Series tournaments became the Championship Series Single Week events, nine other super series, and one regular series event together with two new tournaments formed the first Championship Series tier group.

Between 1990 and 1999 a total of twenty one tournaments had been granted ATP championship series status, though usually twelve or eleven events comprised the tier in any particular given season. In 2000 it was renamed the ATP International Series Gold.

Tournaments The locations and titles of these tournaments may change from year to year. The tournaments, in calendar order, are: TournamentCountryLocationCourt surface2008 Prize MoneyDraw SizeBegan (as ISG)ABN AMRO WTTNetherlandsRotterdamIndoor Hard $824,000321972 (2000)RMK ChampionshipsUnited StatesMemphisIndoor Hard$769,00032 1975 (2000)Dubai Tennis ChampionshipsUnited Arab EmiratesDubaiHard $1,426,000321993 (2001)Abierto Mexicano TelcelMexicoAcapulcoClay$794,000321993 (2000)Open Sabadell AtlánticoSpainBarcelonaClay$888,000561953 (2000)Mercedes CupGermanyStuttgartClay$568,000321916 (2000)Generali OpenAustriaKitzbühelClay$571,000481945 (2000)Japan Open Tennis ChampionshipsJapanTokyoHard$869,000481972 (2000)BA-CA TennisTrophyAustriaViennaIndoor Hard $674,000321974 (2000)

Singles champions ATP Championship Series Tournament 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999Brussels Becker (1/9) Forget (1/1) Becker (5/9)Not an eventAntwerpInvitationalATP World SeriesNot an event Stich (3/3) Rosset (1/2) Rusedski (1/3)Not an eventToronto Indoor Lendl (1/6)Not an eventMemphisATP World Series Lendl (3/6) Washington (1/1) Courier (2/5) Martin (1/3) Martin (2/3) Sampras (7/12) Chang (4/5) Philippoussis (1/2) Haas (1/4)RotterdamATP World Series Kafelnikov (4/4)Milan/LondonATP World Series Becker (6/9) Becker (7/9) Kafelnikov (1/4) Ivanišević (5/7) Ivanišević (6/7) Kafelnikov (3/4) Krajicek (5/5)Philadelphia Sampras (1/12) Lendl (4/6) Sampras (3/12) Woodforde (1/1) Chang (1/5) Enqvist (1/2) Courier (5/5) Sampras (10/12) Sampras (11/12)Not an eventStuttgart Indoor Becker (2/9) Edberg (2/8) Ivanišević (2/7) Stich (2/3) Edberg (7/8) Krajicek (3/5)ATP Super 9Tokyo Outdoor Edberg (1/8) Edberg (3/8) Courier (1/5) Sampras (5/12) Sampras (6/12) Courier (4/5) Sampras (8/12) Krajicek (4/5) Pavel (1/1) Kiefer (1/1)Barcelona Gómez (1/1) E. Sánchez (1/1) C. Costa (1/1) A. Medvedev (2/3) Krajicek (1/5) Muster (1/4) Muster (3/4) A. Costa (1/2) Martin (3/3) Mantilla (1/1)Stuttgart Outdoor Ivanišević (1/7) Stich (1/3) A. Medvedev (1/3) Gustafsson (1/2) Berasategui (1/1) Muster (2/4) Muster (4/4) Corretja (1/5) Kuerten (1/4) Norman (1/1)KitzbühelATP World Series A. Costa (2/2)Washington, D.C. Agassi (1/6) Agassi (2/6) Korda (2/2) Mansdorf (1/1) Edberg (8/8) Agassi (3/6) Chang (3/5) Chang (5/5) Agassi (5/6) Agassi (6/6)Indianapolis Becker (3/9) Sampras (2/12) Sampras (4/12) Courier (3/5) Ferreira (1/1) Enqvist (2/2) Sampras (9/12) Björkman (1/1) Corretja (2/5) Lapentti (1/2)New Haven Rostagno (1/1) Korda (1/2) Edberg (6/8) A. Medvedev (3/3) Becker (8/9) Agassi (4/6) O'Brien (1/1) Kafelnikov (2/4) Kučera (1/1)Not an eventSydney Indoor Becker (4/9) Edberg (4/8) Ivanišević (3/7) Yzaga (1/1) Krajicek (2/5)Not an eventTokyo Indoor Lendl (2/6) Edberg (5/8) Lendl (5/6) Lendl (6/6) Ivanišević (4/7) Chang (2/5)Not an eventSingaporeATP World SeriesNot an eventATP World Series Gustafsson (2/2) Ríos (1/2) Ríos (2/2)ViennaATP World Series Becker (9/9) Ivanišević (7/7) Sampras (12/12) Rusedski (2/3)

ATP International Series Gold Tournament 2000 2001 2002 2003 2004 2005 2006 2007 2008Rotterdam Pioline (1/1) Escudé (1/2) Escudé (2/2) Mirnyi (1/1) Hewitt (2/2) Federer (5/24) Štěpánek (1/2) Youzhny (1/2) Llodra (1/1)Memphis Larsson (1/1) Philippoussis (2/2) Roddick (2/5) Dent (1/1) J. Johansson (1/1) Carlsen (2/2) Haas (3/4) Haas (4/4) Darcis (1/1)London Rosset (2/2)ATP International Series (Milan)Not an eventDubaiATP International Series Ferrero (1/2) Santoro (1/1) Federer (2/24) Federer (4/24) Federer (6/24) Nadal (4/23) Federer (8/24) Roddick (3/5)Mexico City/Acapulco Chela (1/2) Kuerten (3/4) Moyá (1/3) Calleri (1/2) Moyá (3/3) Nadal (1/23) Horna Chela (2/2) Almagro (1/2)Barcelona Safin (1/1) Ferrero (2/2) Gaudio (1/2) Moyá (2/3) Robredo (1/1) Nadal (2/23) Nadal (5/23) Nadal (6/23) Nadal (8/23)Stuttgart Squillari (1/1) Kuerten (4/4)ATP International Series Coria (1/2) Cañas (1/1) Nadal (3/23) Ferrer (1/10) Nadal (7/23) del Potro (1/9)Kitzbühel Corretja (3/5) Lapentti (2/2) Corretja (5/5) Coria (2/2) Massú (1/1) Gaudio (2/2) Calleri (2/2) Mónaco (1/2) del Potro (2/9)Washington, D.C. Corretja (4/2) Roddick (1/5) Blake (1/1)ATP International SeriesIndianapolis Kuerten (2/4) Rafter (1/1) Rusedski (3/3)ATP International SeriesTokyo Schalken (1/1) Hewitt (1/2) Carlsen (1/2) Schüttler (1/1) Novák (1/1) Moodie (1/1) Federer (7/24) Ferrer (2/10) Berdych (1/3)Vienna Henman (1/1) Haas (2/4) Federer (1/24) Federer (3/24) López (1/3) Ljubičić (1/2) Ljubičić (2/2) Djokovic (1/15) Petzschner (1/1)

Doubles champions

ATP Championship Series Tournament 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999Brussels E. Sánchez (1/3) Živojinović (1/1) Woodbridge (1/12) Woodforde (1/11) Becker (1/2) J. McEnroe (1/1)Not an eventAntwerpInvitationalATP World SeriesNot an event Björkman (1/2) Kulti (1/2) Adams (2/5) Delaître (2/3) W. Ferreira (1/1) Kafelnikov (3/6)Not an eventToronto Indoor Galbraith (1/8) Macpherson (1/3)Not an eventMemphisATP World Series Riglewski (1/1) Stich (1/1) Woodbridge (3/12) Woodforde (2/11) Woodbridge (6/12) Woodforde (5/11) Black (2/3) Stark (2/4) Palmer (2/6) Reneberg (6/7) Knowles (3/15) Nestor (2/20) E. Ferreira (1/2) Galbraith (7/8) Woodbridge (10/12) Woodforde (9/11) Woodbridge (12/12) Woodforde (11/11)RotterdamATP World Series Adams (3/5) de Jager (1/3)Milan/LondonATP World Series Kratzmann (2/3) Masur (4/5) Nijssen (3/3) Suk (4/7) Becker (2/2) Forget (3/3) Gaudenzi (1/1) Ivanišević (1/1) Albano (1/2) Nyborg (1/2) Damm (2/9) Grabb (7/7) Henman (1/1) Rusedski (1/1)Philadelphia Leach (1/8) Pugh (1/2) Leach (2/8) Pugh (2/2) Woodbridge (4/12) Woodforde (3/11) Grabb (4/7) Reneberg (4/7) Eltingh (1/5) Haarhuis (1/7) Grabb (5/7) Stark (3/4) Woodbridge (8/12) Woodforde (7/11) Lareau (1/4) O'Brien (1/2) Eltingh (4/5) Haarhuis (4/7)Not an eventStuttgart Indoor Forget (1/3) Hlasek (1/2) Casal (1/1) E. Sánchez (2/3) Nijssen (1/3) Suk (1/7) Kratzmann (3/3) Masur (5/5) Adams (1/5) Olhovskiy (1/1) Connell (6/8) Galbraith (6/8)ATP Super 9Tokyo Outdoor Kratzmann (1/3) Masur (1/5) Edberg Woodbridge (2/12) Jones (1/2) Leach (3/8) Flach (2/2) Leach (5/8) Holm (1/1) Järryd (1/1) Knowles (1/15) Stark (4/4) Woodbridge (9/12) Woodforde (8/11) Damm (1/9) Vacek (3/6) Lareau (2/4) Nestor (3/20) Tarango (2/2) Vacek (5/6)Barcelona Gómez (1/2) J. Sánchez (1/3) de la Peña (1/1) Nargiso (1/1) Gómez (2/2) J. Sánchez (2/3) Cannon (1/1) Melville (2/4) Kafelnikov (1/6) Rikl (1/4) Kronemann (1/1) Macpherson (2/3) Lobo (1/2) J. Sánchez (3/3) Berasategui (1/1) Burillo (1/1) Eltingh (5/5) Haarhuis (5/7) Haarhuis (6/7) Kafelnikov (5/6)Stuttgart Outdoor Aldrich (1/1) Visser (1/1) Masur (2/5) E. Sánchez (3/3) Layendecker (1/1) Talbot (1/2) Nijssen (2/3) Suk (2/7) Melville (3/4) Norval (1/1) Carbonell (1/1) Roig (1/1) Pimek (1/1) Talbot (2/2) Kuerten (1/2) Meligeni (1/1) Delaître (3/3) Santoro (1/3) Oncins (1/1) Orsanic (1/1)KitzbühelATP World Series Haggard (1/3) Nyborg (2/2)Washington, D.C. Connell (1/8) Michibata (1/1) Davis (2/4) Pate (2/2) Garnett (1/1) Palmer (1/6) Black (1/3) Leach (6/8) Connell (3/8) Galbraith (3/8) Delaître (1/3) Tarango (1/2) Connell (7/8) Davis (4/4) L. Jensen (1/1) M. Jensen (1/1) Stafford (1/1) Ullyett (1/4) Gimelstob (1/3) Lareau (3/4)Indianapolis Davis (1/4) Pate (1/2) Flach (1/1) Seguso (1/1) Grabb (3/7) Reneberg (3/7) Davis (3/4) Martin (1/1) Woodbridge (7/12) Woodforde (6/11) Knowles (2/15) Nestor (1/20) Grabb (6/7) Reneberg (7/7) Tillström (1/2) Tebbutt (1/1) Novák (1/3) Rikl (2/4) Haarhuis (7/7) Palmer (3/6)New Haven Brown (1/1) Melville (1/4) Korda (1/1) Masur (3/5) Jones (2/2) Leach (4/8) Suk (3/7) Vacek (1/6) Connell (4/8) Galbraith (4/8) Leach (7/8) Melville (4/4) Black (3/3) Connell (8/8) Bhupathi (1/8) Paes (1/6) Arthurs (1/2) Tramacchi (1/1)Not an eventSydney Indoor Dyke (1/1) Lundgren (1/1) Grabb (1/7) Reneberg (1/7) P. McEnroe (1/2) Stark (1/4) P. McEnroe (2/2) Reneberg (5/7) Eltingh (2/5) Haarhuis (2/7)Not an eventTokyo Indoor Forget (2/3) Hlasek (1/2) Grabb (2/7) Reneberg (2/7) Woodbridge (5/12) Woodforde (4/11) Connell (2/8) Galbraith (2/8) Connell (5/8) Galbraith (5/8) Eltingh (3/5) Haarhuis (3/7)Not an eventSingaporeATP World SeriesNot an eventATP World Series Bhupathi (2/8) Paes (2/6) Woodbridge (11/12) Woodforde (10/11) Mirnyi (1/7) Taino (1/1)ViennaATP World Series Kafelnikov (2/6) Vacek (2/6) E. Ferreira (1/2) Galbraith (8/8) Kafelnikov (4/6) Vacek (4/6) Prinosil (1/2) Stolle (1/4)

International Series Gold