The ATP Challenger Series is the second tier tour for professional tennis organised by the Association of Tennis Professionals (ATP). The 2001 ATP Challenger Series calendar comprised 135 tournaments, with prize money ranging from $25,000 up to $125,000.

Schedule January DateCountryTournamentPrizemoneySurfaceSingles championDoubles champions 01.01. Aberto de São Paulo $ 25,000 Hard Flávio Saretta Noam Okun André Sá 22.01. Heilbronn Open $ 100,000 Carpet (i) Michaël Llodra Sander Groen Jack Waite Hilton Waikoloa Village USTA Challenger $ 50,000 Hard Andy Roddick Paul Goldstein Jim Thomas 29.01. Warsteiner Challenger $ 25,000 Carpet (i) Michaël Llodra Julian Knowle Lorenzo Manta

February DateCountryTournamentPrizemoneySurfaceSingles championDoubles champions 05.02. KGHM Polish Indoors $ 125,000 Hard (i) Axel Pretzsch Wayne Black Jason Weir-Smith Challenger of Dallas $ 50,000 Hard Dmitry Tursunov Gavin Sontag Jerry Turek 12.02. Warsteiner Challenger Lübeck $ 25,000 Carpet (i) Zbynek Mlynarik Julian Knowle Lorenzo Manta Mumbai Challenger $ 25,000 Hard Federico Luzzi František Čermák Ota Fukárek 19.02. Challenger 42 $ 50,000 Hard (i) Nenad Zimonjić Julien Benneteau Nicolas Mahut Heineken Challenger $ 50,000 Hard Petr Kralert Takao Suzuki Eric Taino The IndianOil Servo ATP Challenger $ 25,000 Hard Dennis van Scheppingen František Čermák Radek Štěpánek Hull Challenger $ 25,000 Carpet (i) Michael Kohlmann Michael Kohlmann Michaël Llodra Volkswagen Challenger $ 25,000 Carpet (i) Jarkko Nieminen Robert Lindstedt Fredrik Lovén 26.02. Singapore Challenger $ 50,000 Hard Ota Fukárek Tim Crichton Ashley Fisher Challenger Ford de Cherbourg-Octeville $ 37.500 Hard (i) Orlin Stanoytchev Julian Knowle Lorenzo Manta

March DateCountryTournamentPrizemoneySurfaceSingles championDoubles champions 05.03. Shimadzu All Japan Indoor Tennis Championships $ 25,000 Carpet (i) John van Lottum Noam Behr Noam Okun 12.03. Residenza Open Magdeburg $ 25,000 Carpet (i) Axel Pretzsch Frédéric Niemeyer Radek Štěpánek Perth Challenger $ 25,000 Hard Vasilis Mazarakis Stephen Huss Lee Pearson Abierto Internacional de Salinas $ 25,000 Hard David Nalbandian Luis Horna David Nalbandian 19.03. Espinho Open $ 25,000 Clay Félix Mantilla Wim Neefs Djalmar Sistermans Hamilton Challenger $ 25,000 Hard Björn Rehnquist Noam Behr Noam Okun 26.03. Torneo Internazionale di Tennis Città della Disfida Open $ 25,000 Clay Félix Mantilla Germán Puentes Jairo Velasco Jr.

April DateCountryTournamentPrizemoneySurfaceSingles championDoubles champions 02.04. USTA Challenger of Calabasas $ 25,000 Hard André Sá Ota Fukárek Ivo Heuberger 09.04. San Luis Potosí Challenger $ 50,000 Clay Martín Rodríguez Edgardo Massa Sergio Roitman 16.04. XL Bermuda Open $ 100,000 Clay José Acasuso Paul Goldstein Andy Roddick

May DateCountryTournamentPrizemoneySurfaceSingles championDoubles champions 07.05. Birmingham Challenger $ 50,000 Clay Irakli Labadze James Blake Mark Merklein Jerusalem Challenger $ 50,000 Hard Noam Okun Jonathan Erlich Michaël Llodra Fergana Challenger $ 25,000 Hard Ivo Heuberger Rik de Voest Igor Kunitsyn 14.05. Belmont Farms USTA Challenger $ 50,000 Clay Jan Vacek Mark Merklein Mitch Sprengelmeyer Zagreb Open $ 50,000 Clay Jacobo Díaz Enzo Artoni Andrés Schneiter Antwerp Challenger $ 25,000 Clay Dick Norman Juan Giner Jerry Turek Edinburgh Challenger $ 25,000 Clay Kristian Pless Filippo Messori Salvador Navarro ECM Prague Open $ 25,000 Clay Ctislav Doseděl Jaroslav Levinský Michal Navrátil 21.05. Budapest Challenger I $ 25,000 Clay Giorgio Galimberti Daniel Melo Sergio Roitman 28.05. Compaq Challenger $ 25,000 Clay Irakli Labadze Mark Merklein Paul Rosner Aberto da Costa do Sauípe $ 25,000 Hard André Sá Adriano Ferreira Daniel Melo

June DateCountryTournamentPrizemoneySurfaceSingles championDoubles champions 04.06. Unicredit Czech Open $ 100,000 Clay Bohdan Ulihrach Andrea Gaudenzi Sander Groen Quelle Cup $ 50,000 Clay Germán Puentes Hugo Armando Andrei Stoliarov Surbiton Trophy $ 50,000 Grass Taylor Dent David Adams Ben Ellwood Tallahassee Tennis Challenger $ 50,000 Hard Ramón Delgado Matthew Breen Lee Pearson 11.06. Top Wool Challenger $ 100,000 Clay Adrian Voinea Enzo Artoni Andrés Schneiter ATU Cup $ 50,000 Clay Jiří Vaněk Julián Alonso Hugo Armando 18.06. Nord/LB Open $ 125,000 Clay Andrea Gaudenzi Karsten Braasch Jens Knippschild Challenger Lugano $ 50,000 Clay Jiří Vaněk Steven Randjelovic Attila Sávolt 25.06. Open Internacional d’Andorra $ 25,000 Hard (i) Noam Okun Denis Golovanov Tuomas Ketola Wartburg Open $ 25,000 Clay Oliver Gross Yves Allegro Gabriel Trifu Memorial Savigni $ 25,000 Clay Attila Sávolt Didac Pérez Gabriel Trujillo Soler

July DateCountryTournamentPrizemoneySurfaceSingles championDoubles champions 02.07. Venice Challenger $ 100,000 Clay Christophe Rochus Mark Merklein Mitch Sprengelmeyer Müller Cup $ 50,000 Clay Nikolay Davydenko František Čermák David Škoch Intelig Tennis Cup $ 25,000 Hard Ricardo Mello Alejandro Hernández André Sá Open de Montauban $ 25,000 Clay Oliver Gross Diego del Río Vadim Kutsenko 09.07. Samsung Open $ 75,000 Clay Raemon Sluiter Jordan Kerr Grant Silcock Bristol Challenger Trophy $ 50,000 Grass Jamie Delgado Wesley Moodie Shaun Rudman Granby Challenger $ 50,000 Hard Axel Pretzsch Bobby Kokavec Jeff Morrison Tess Tennis Classic $ 25,000 Clay Alessio di Mauro Edgardo Massa Leonardo Olguín Challenger Canottieri Mincio $ 25,000 Clay Diego Hipperdinger Stefano Galvani Salvador Navarro Oberstaufen Cup $ 25,000 Clay Oliver Gross Karol Beck Branislav Sekáč 16.07. USTA Seascape Challenger $ 50,000 Hard Jeff Salzenstein Brandon Hawk Robert Kendrick Manchester Trophy $ 50,000 Grass Jean-François Bachelot Ben Ellwood Fredrik Lovén 23.07. Credicard Mastercard Tennis Cup $ 75,000 Hard Ramón Delgado Dejan Petrović Andy Ram Amer-Wilson Tampere ATP Tournament $ 50,000 Clay Jarkko Nieminen Stephen Huss Lee Pearson Stella Artois Clay Court Championships $ 25,000 Clay Juan Ignacio Chela Petr Dezort Radomír Vašek 30.07. San Marino CEPU Open $ 100,000 Clay Juan Antonio Marín František Čermák David Škoch Open Castilla y León $ 100,000 Hard Juan Ignacio Chela Wesley Moodie Shaun Rudman Fifth Third Bank Tennis Classic $ 50,000 Hard Paul Goldstein John-Laffnie de Jager Robbie Koenig BH Tennis Open International Cup $ 25,000 Hard Eric Taino Dejan Petrović Andy Ram Wrexham Challenger $ 25,000 Hard Michael Kohlmann Gilles Elseneer Alexander Popp

August DateCountryTournamentPrizemoneySurfaceSingles championDoubles champions 06.08. Open Diputación Ciudad de Pozoblanco $ 75,000 Hard Jarkko Nieminen Jordan Kerr Grant Silcock Time Warner USTA Challenger $ 50,000 Hard Cedric Kauffmann Bobby Kokavec Frédéric Niemeyer Skandia Open $ 50,000 Clay Jan Vacek Aleksandar Kitinov Todd Perry Gramado Open de Tênis $ 25,000 Hard Barry Cowan Dejan Petrović Andy Ram ATP Challenger Riviera delle Palme $ 25,000 Clay Marzio Martelli Leonardo Azzaro Stefano Galvani Togliatti Cup $ 25,000 Hard Alexander Peya Karol Beck Igor Zelenay 13.08. Bronx Challenger $ 50,000 Hard Björn Phau Kelly Gullett Bobby Kokavec CA Challenge $ 50,000 Hard Julian Knowle Tim Crichton Todd Perry Sopot Challenger $ 50,000 Clay David Ferrer Bartłomiej Dąbrowski Marcin Matkowski Brasília Challenger I $ 25,000 Clay Gastón Etlis Gastón Etlis Leonardo Olguín Bressanone Challenger $ 25,000 Clay Renzo Furlan Massimo Bertolini Cristian Brandi Volvo Sylt Open $ 25,000 Clay Salvador Navarro Dennis van Scheppingen Bobbie Altelaar 20.08. Geneva Challenger $ 50,000 Clay Dennis van Scheppingen Diego del Río Orlin Stanoytchev Ribeirão Challenger $ 50,000 Clay Juan Ignacio Chela Adriano Ferreira Antonio Prieto Manerbio Challenger $ 25,000 Clay Attila Sávolt Attila Sávolt Thomas Strengberger BMW Challenger Open $ 25,000 Clay Jürgen Melzer Jens Knippschild Jairo Velasco Jr. 27.08. Telesp Celular Open $ 50,000 Clay Juan Ignacio Chela Edgardo Massa Flávio Saretta Black Forest Open $ 37.500 Clay Albert Montañés Franz Stauder Alexander Waske Brindisi Challenger $ 25,000 Clay Federico Luzzi Daniele Bracciali Giorgio Galimberti

September DateCountryTournamentPrizemoneySurfaceSingles championDoubles champions 03.09. Kiew Challenger $ 125,000 Clay David Sánchez Jordan Kerr Grant Silcock Curitiba Challenger $ 50,000 Clay Flávio Saretta Tim Crichton Ashley Fisher Rhein-Main Challenger $ 37.500 Clay Simon Greul Aleksandar Kitinov Dušan Vemić Brașov Challenger $ 25,000 Clay Stefano Galvani Amir Hadad Lovro Zovko 10.09. Tarzana Challenger $ 50,000 Hard Levar Harper-Griffith Zack Fleishman Michael Joyce Budapest Challenger II $ 25,000 Clay Didac Pérez Oliver Marach Jarkko Nieminen Sofia Challenger $ 25,000 Clay Vasilis Mazarakis Igor Gaudi Stefano Galvani Compaq Cup $ 25,000 Clay Ota Fukárek Julian Knowle Michael Kohlmann 17.09. Stettin Challenger $ 125,000 Clay Juan Ignacio Chela Mariusz Fyrstenberg Marcin Matkowski TED Open $ 75,000 Hard Nikolay Davydenko Jonathan Erlich Michaël Llodra Florianópolis Challenger $ 50,000 Clay Edgardo Massa Gastón Etlis Martín Rodríguez Copa Sevilla $ 37.500 Clay Stefano Galvani Stefano Galvani Vincenzo Santopadre 24.09. Maia Open $ 125,000 Clay Jarkko Nieminen Juan Ignacio Carrasco Djalmar Sistermans Kamnik Challenger $ 25,000 Clay Željko Krajan Igor Brukner Jaroslav Levinský Samarkand Challenger $ 25,000 Clay Oleg Ogorodov Denis Golovanov Vadim Kutsenko São Paulo Challenger I $ 25,000 Clay Edgardo Massa Adriano Ferreira Edgardo Massa

October DateCountryTournamentPrizemoneySurfaceSingles championDoubles champions 01.10. Cagliari Challenger $ 75,000 Clay Fernando Vicente Juan Ignacio Carrasco Álex López Morón Grenoble Challenger $ 75,000 Hard (i) Johan Settergren Jonathan Erlich Andy Ram Guadalajara Challenger $ 75,000 Clay Agustín Calleri Gastón Etlis Martin Rodriguez Tulsa Challenger $ 50,000 Hard Jan Hernych Mardy Fish Jeff Morrison Bukhara Challenger $ 25,000 Hard John van Lottum Aisam-ul-Haq Qureshi Rogier Wassen 08.10. Lima Challenger $ 75,000 Clay Juan Ignacio Chela Enzo Artoni Daniel Melo Barcelona Challenger $ 50,000 Clay Konstantinos Economidis Juan Ignacio Carrasco Álex López Morón Kerrville Challenger $ 25,000 Hard Alex Kim Brandon Hawk Robert Kendrick 15.10. Helsinki Challenger $ 50,000 Carpet (i) George Bastl Tim Crichton Jim Thomas Brasília Challenger II $ 25,000 Clay Sebastián Prieto Luis Lobo Daniel Orsanic Quito Challenger $ 25,000 Clay Hugo Armando Ricardo Schlachter Rogier Wassen 22.10. São Paulo Challenger II $ 75,000 Clay Agustín Calleri Agustín Calleri Edgardo Massa Seoul Challenger $ 50,000 Hard Lee Hyung-taik František Čermák Jaroslav Levinský Houston Challenger $ 25,000 Hard Vince Spadea Jeff Coetzee Paul Rosner 29.10. Santiago Challenger $ 75,000 Clay Marcelo Ríos André Sá Alexandre Simoni Lambertz Open by STAWAG $ 50,000 Carpet (i) Alexander Popp Julian Knowle Michael Kohlmann Bolton Challenger $ 25,000 Hard (i) Olivier Rochus Gilles Elseneer Wim Neefs Burbank Challenger $ 25,000 Hard Kevin Kim Scott Humphries Chris Woodruff Yokohama Challenger $ 25,000 Carpet (i) Takao Suzuki Takao Suzuki Mitsuru Takada

November