| Details | |
|---|---|
| Duration | 26 January 1998 – 4 January 1999 | 
| Edition | 21st | 
| Tournaments | 114 | 
| Achievements (singles) | |
| ← 1997   1999 → | |
The ATP Challenger Series is the second tier tour for professional tennis organised by the Association of Tennis Professionals (ATP). The 1998 ATP Challenger Series calendar comprised 114 tournaments, with prize money ranging from $25,000 up to $125,000. [1] [2]
| Date | Country | Tournament | Prizemoney | Surface | Singles champion | Doubles champions | 
|---|---|---|---|---|---|---|
| 26.01. |  Germany | Heilbronn Open | $ 100,000 | Carpet (i) |  Martin Sinner |  Geoff Grant  Mark Merklein | 
| Date | Country | Tournament | Prizemoney | Surface | Singles champion | Doubles champions | 
|---|---|---|---|---|---|---|
| 02.02. |  South Africa | West Bloomfield Challenger | $ 50,000 | Hard (i) |  Alex O'Brien |  Jim Thomas  Laurence Tieleman | 
|  Germany | Lippstadt Challenger | $ 25,000 | Carpet (i) |  Dirk Dier |  Andrew Richardson  Myles Wakefield | |
| 09.02. |  Germany | Volkswagen Challenger | $ 25,000 | Carpet (i) |  Ivo Heuberger |  Marat Safin  Dušan Vemić | 
| 16.02. |  Singapore | Singapore Challenger | $ 50,000 | Hard |  Fernando Vicente |  Jim Thomas  Laurence Tieleman | 
|  Germany | Warsteiner Challenger Lübeck | $ 25,000 | Carpet (i) |  Peter Wessels |  Lorenzo Manta  Andrew Richardson | |
| 23.02. |  Vietnam | Ho Chi Minh Challenger | $ 50,000 | Hard |  André Sá |  Mahesh Bhupathi  Peter Tramacchi | 
|  France | Cherbourg Challenger | $ 25,000 | Hard (i) |  Jérôme Golmard |  Massimo Ardinghi  Massimo Bertolini | 
| Date | Country | Tournament | Prizemoney | Surface | Singles champion | Doubles champions | 
|---|---|---|---|---|---|---|
| 02.03. |  Thailand | Bangkok Challenger | $ 50,000 | Hard |  Leander Paes |  Peter Tramacchi  Kevin Ullyett | 
|  Germany | Residenza Open Magdeburg | $ 25,000 | Carpet (i) |  Lars Burgsmüller |  Eyal Erlich  Mosé Navarra | |
| 09.03. |  Ecuador | Salinas Challenger | $ 50,000 | Hard |  André Sá |  David DiLucia  Michael Sell | 
|  Japan | Kyoto Challenger | $ 25,000 | Carpet (i) |  Michael Kohlmann |  Takao Suzuki  Kevin Ullyett | |
| 30.03. |  Italy | Barletta Challenger | $ 25,000 | Clay |  Francisco Cabello |  Joan Balcells  Juan Ignacio Carrasco | 
| Date | Country | Tournament | Prizemoney | Surface | Singles champion | Doubles champions | 
|---|---|---|---|---|---|---|
| 06.04. |  Bermuda | XL Bermuda Open | $ 100,000 | Clay |  Hernán Gumy |  Doug Flach  Richey Reneberg | 
|  Italy | Napoli Challenger | $ 100,000 | Clay |  Davide Sanguinetti |  Massimo Bertolini  Devin Bowen | |
|  Mexico | San Luis Potosí Challenger | $ 25,000 | Clay |  Luis Morejón |  Edwin Kempes  Peter Wessels | |
| 13.04. |  France | Nice Challenger | $ 100,000 | Clay |  Mariano Puerta |  Devin Bowen  Mariano Hood | 
|  United States | Birmingham Challenger | $ 50,000 | Clay |  Christian Ruud |  Doug Flach  David Witt | |
|  India | Vadodara Challenger | $ 50,000 | Grass |  Peter Tramacchi |  Myles Wakefield  Wesley Whitehouse | |
|  Mexico | Puerto Vallarta Challenger | $ 25,000 | Hard (i) |  Geoff Grant |  Luis Herrera  Gabriel Trifu | |
| 20.04. |  Portugal | Espinho Challenger | $ 125,000 | Clay |  Guillermo Cañas |  Jens Knippschild  Stephen Noteboom | 
|  Czech Republic | Prague Challenger | $ 25,000 | Clay |  Michal Tabara |  Joan Balcells  Nenad Zimonjić | 
| Date | Country | Tournament | Prizemoney | Surface | Singles champion | Doubles champions | 
|---|---|---|---|---|---|---|
| 04.05. |  Slovenia | Ljubljana Challenger | $ 125,000 | Clay |  Dinu Pescariu |  Marius Barnard  Stephen Noteboom | 
|  Israel | Jerusalem Challenger | $ 50,000 | Hard |  Neville Godwin |  Noam Behr  Eyal Erlich | |
| 11.05. |  Czech Republic | Košice Challenger | $ 125,000 | Clay |  Dominik Hrbatý |  Jiří Novák  David Rikl | 
|  Germany | Ostdeutscher Sparkassen Cup | $ 50,000 | Clay |  Dirk Dier |  Pablo Albano  Sander Groen | |
| 18.05. |  Hungary | Budapest Challenger I | $ 50,000 | Clay |  Marcos Ondruska |  Chris Haggard  Paul Rosner | 
| 25.05. |  Ukraine | Kyiv Challenger | $ 50,000 | Clay |  Nenad Zimonjić |  Thomas Buchmayer  Thomas Strengberger | 
|  Colombia | Medellín Challenger | $ 25,000 | Clay |  Adriano Ferreira |  Adriano Ferreira  Cristiano Testa | 
| Date | Country | Tournament | Prizemoney | Surface | Singles champion | Doubles champions | 
|---|---|---|---|---|---|---|
| 05.10. |  Chile | Santiago Challenger | $ 100,000 | Clay |  Sebastián Prieto |  Ota Fukárek  Attila Sávolt | 
|  United States | San Antonio Challenger | $ 50,000 | Hard |  Geoff Grant |  David DiLucia  Michael Sell | |
|  Israel | Tel Aviv Challenger | $ 50,000 | Hard |  Gianluca Pozzi |  Radek Štěpánek  Michal Tabara | |
| 12.10. |  Spain | Barcelona Challenger | $ 100,000 | Clay |  Fernando Vicente |  José Antonio Conde  Javier Sánchez | 
|  Brazil | São Paulo Challenger | $ 100,000 | Clay |  Fernando Meligeni |  Diego del Río  Martín Rodríguez | |
|  United States | San Diego Challenger | $ 50,000 | Hard |  Ville Liukko |  Paul Goldstein  Adam Peterson | |
| 19.10. |  Egypt | Cairo Challenger | $ 100,000 | Clay |  Albert Portas |  Albert Portas  Álex López Morón | 
|  Uruguay | Montevideo Challenger | $ 100,000 | Clay |  Eduardo Medica |  Francisco Cabello  Agustín Calleri | |
|  Hong Kong | Hongkong Challenger | $ 50,000 | Hard | Not completed | ||
|  Germany | Okal Cup | $ 25,000 | Carpet (i) |  Jared Palmer |  Tomáš Cibulec  Raemon Sluiter | |
|  Uzbekistan | Samarkand Challenger | $ 25,000 | Clay |  Fredrik Jonsson |  Noam Behr  Eyal Ran | |
| 26.10. |  France | Brest Challenger | $ 100,000 | Hard (i) |  Jérôme Golmard |  Neville Godwin  Marcos Ondruska | 
| Date | Country | Tournament | Prizemoney | Surface | Singles champion | Doubles champions | 
|---|---|---|---|---|---|---|
| 07.12. |  Australia | Perth Challenger | $ 25,000 | Hard |  Lleyton Hewitt |  Lleyton Hewitt  Paul Kilderry | 
|  Chile | Cerveza Cristal | $ 25,000 | Clay |  Gastón Gaudio |  Enzo Artoni  Federico Browne | |
| 21.12. |  India | Ahmedabad Challenger | $ 25,000 | Hard |  Antony Dupuis |  Noam Okun  Nir Welgreen | 
| 28.12. |  India | Mumbai Challenger | $ 25,000 | Hard |  Antony Dupuis |  Noam Behr  Eyal Ran |