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The ATP International Series (known from 1990 to 1999 as the ATP World Series) was a series of professional tennis tournaments held internationally as part of the ATP Tour from 2000 to 2008.
The series was renamed ATP Tour 250 in 2009.[1] International Series offered players cash prizes (tournaments have purses from $416,000 to $1,000,000) and the ability to earn ATP ranking points. They generally offered less prize money and fewer points than the ATP International Series Gold, but more than tournaments on the ATP Challenger Series.
Tournaments
The locations and titles of these tournaments were subject to change every year. The tournaments – in calendar order – in 2008 were:
| Tournament | Location | Court surface | Prize Money(US$) | Draw Size | First played |
| Next Generation Adelaide International | Adelaide, Australia | Hard | $419,000 | 32 | 1972 |
| Qatar ExxonMobil Open | Doha, Qatar | Hard | $1,000,000 | 32 | 1993 |
| Chennai Open | Chennai, India | Hard | $436,000 | 32 | 1996 |
| Medibank International | Sydney, Australia | Hard | $436,000 | 32 | 1885 |
| Heineken Open | Auckland, New Zealand | Hard | $436,000 | 32 | 1956 |
| Zagreb Indoors | Zagreb, Croatia | Carpet ( i ) | $416,000 | 32 | 2006 |
| International Tennis Championships | Delray Beach, Florida, USA | Hard | $416,000 | 32 | 1993 |
| Movistar Open | Viña del Mar, Chile | Clay | $448,000 | 32 | 1993 |
| Open 13 | Marseille, France | Hard ( i ) | $600,000 | 32 | 1993 |
| Brasil Open | Costa do Sauipe, Bahia, Brazil | Clay | $456,000 | 32 | 2001 |
| SAP Open | San Jose, California, USA | Hard ( i ) | $416,000 | 32 | 1889 |
| Copa Telmex ATP Buenos Aires | Buenos Aires, Argentina | Clay | $600,000 | 32 | 1968 |
| Tennis Channel Open | Las Vegas, Nevada, USA | Hard | $416,000 | 32 | 1986 |
| Open de Tenis Comunidad Valenciana | Valencia, Spain | Clay | $416,000 | 32 | 1995 |
| U.S. Men's Clay Court Championships | Houston, Texas, USA | Clay | $416,000 | 32 | 1910 |
| Grand Prix Hassan II | Casablanca, Morocco | Clay | $416,000 | 32 | 1984 |
| BMW Open | Munich, Germany | Clay | $416,000 | 32 | 1900 |
| Portugal Open | Oeiras, Portugal | Clay | $625,000 | 32 | 1990 |
| Hypo Group Tennis International | Pörtschach, Austria | Clay | $416,000 | 32 | 1981 |
| Aegon Championships | London, Great Britain | Grass | $800,000 | 56 | 1890 |
| Gerry Weber Open | Halle, Germany | Grass | $800,000 | 32 | 1991 |
| Nottingham Open | Nottingham, Great Britain | Grass | $416,000 | 32 | 1995 |
| Ordina Open | 's-Hertogenbosch, Netherlands | Grass | $416,000 | 32 | 1990 |
| Hall of Fame Championships | Newport, Rhode Island, USA | Grass | $416,000 | 32 | 1976 |
| Suisse Open | Gstaad, Switzerland | Clay | $496,000 | 32 | 1915 |
| Swedish Open | Båstad, Sweden | Clay | $416,000 | 32 | 1948 |
| Dutch Open | Amersfoort, Netherlands | Clay | $416,000 | 32 | 1957 |
| Countrywide Classic | Los Angeles, USA | Hard | $525,000 | 32 | 1927 |
| Croatia Open | Umag, Croatia | Clay | $416,000 | 32 | 1990 |
| Indianapolis Tennis Championships | Indianapolis, Indiana, USA | Hard | $525,000 | 32 | 1988 |
| Orange Prokom Open | Sopot, Poland | Clay | $500,000 | 32 | 2001 |
| Legg Mason Tennis Classic | Washington, D.C., USA | Hard | $600,000 | 48 | 1969 |
| Pilot Pen Tennis | New Haven, Connecticut, USA | Hard | $675,000 | 48 | 1985 |
| China Open | Beijing, China | Hard | $500,000 | 32 | 1993 |
| BCR Open Romania | Bucharest, Romania | Clay | $525,000 | 32 | 1993 |
| Thailand Open | Bangkok, Thailand | Hard ( i ) | $550,000 | 32 | 2003 |
| Kingfisher Airlines Tennis Open | Mumbai, India | Hard | $416,000 | 32 | 2006 |
| Open de Moselle | Metz, France | Hard ( i ) | $416,000 | 32 | 2003 |
| Kremlin Cup | Moscow, Russia | Carpet ( i ) | $1,000,000 | 32 | 1990 |
| Stockholm Open | Stockholm, Sweden | Carpet ( i ) | $800,000 | 32 | 1969 |
| Davidoff Swiss Indoors | Basel, Switzerland | Hard ( i ) | $1,000,000 | 32 | 1970 |
| Grand Prix de Tennis de Lyon | Lyon, France | Carpet ( i ) | $800,000 | 32 | 1987 |
| St. Petersburg Open | St. Petersburg, Russia | Carpet ( i ) | $1,000,000 | 32 | 1995 |
Singles champions
ATP International Series
| 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | |
|---|---|---|---|---|---|---|---|---|---|
| Adelaide |  Hewitt |
 Haas |
 Henman |
 Davydenko |
 Hrbatý |
 J. Johansson |
 Serra |
 Djokovic |
Llodra
|
| Chennai | Golmard |
 Tabara |
 Cañas |
 Srichaphan |
 Moyá |
Moyá |
 Ljubičić |
 Malisse |
Youzhny
|
| Doha | Santoro |
 Ríos |
 El Aynaoui |
 Koubek |
Escudé |
 Federer |
Federer |
Ljubičić |
Murray
|
| Auckland | Norman |
Hrbatý |
Rusedski |
 Kuerten |
Hrbatý |
González |
 Nieminen |
Ferrer |
Kohlschreiber
|
| Sydney | Hewitt |
Hewitt |
Federer |
 Lee |
Hewitt |
Hewitt |
 Blake |
Blake |
Tursunov
|
| Milan | ATP International Series Gold | Federer |
 Sanguinetti |
 Verkerk |
Dupuis |
Söderling |
Not an Event | ||
| Dubai | Kiefer |
ATP International Series Gold | |||||||
| Santiago/Viña del Mar | Kuerten |
Coria |
González |
D. Sánchez |
González |
Gaudio |
Acasuso |
 Horna |
González
|
| Marseille | Rosset |
Kafelnikov |
Enqvist |
Federer |
Hrbatý |
J. Johansson |
Clément |
Simon |
Murray
|
| Costa do Sauípe | Not an Event | Vacek |
Kuerten |
Schalken |
Kuerten |
Nadal |
Massú |
Cañas |
Almagro
|
| Zagreb | Not an Event | Ljubičić |
 Baghdatis |
 Stakhovsky
| |||||
| Bogotá | Puerta |
Vicente |
Not an Event | ATP Challenger Tour | |||||
| San Jose | Philippoussis |
Rusedski |
Hewitt |
Agassi |
Roddick |
Roddick |
Murray |
Murray |
Roddick
|
| Copenhagen | Vinciguerra |
Henman |
Burgsmüller |
Kučera |
Not an Event | ||||
| Buenos Aires | Not an Event | Kuerten |
Massú |
Moyá |
Coria |
Gaudio |
Moyá |
Mónaco |
Nalbandian
|
| Delray Beach | Koubek |
Gambill |
Sanguinetti |
Gambill |
Mello |
Malisse |
Haas |
Malisse |
 Nishikori
|
| Scottsdale/Las Vegas | Hewitt |
Clavet |
Agassi |
Hewitt |
Spadea |
Arthurs |
Blake |
Hewitt |
Querrey
|
| Atlanta | Ilie |
Roddick |
Not an Event | ||||||
| Estoril | Moyá |
Ferrero |
Nalbandian |
Davydenko |
Chela |
Gaudio |
Nalbandian |
Djokovic |
Federer
|