The ATP Challenger Series was the second-tier tour for professional tennis organised by the Association of Tennis Professionals (ATP). The 1988 ATP Challenger Series calendar comprised 91 tournaments, with prize money ranging from $25,000 up to $75,000.

Schedule

January Week ofTournamentChampionsRunners-upSemifinalistsQuarterfinalists January 4 No tournaments scheduled.January 11 Intersport Heilbronn Open Heilbronn, West Germany$25,000 – carpet (I) – 32S/16D Singles draw – Doubles draw Udo Riglewski 6–3, 6–7, 6–4 Michael Kupferschmid Damir Buljević Adrian Marcu Ronnie Båthman Stanislav Birner Fredrik Waern Morten Christensen Jaromir Becka Udo Riglewski 7–6, 4–6, 6–2 Axel Hornung Andreas LeschJanuary 18 Viña del Mar Challenger Viña del Mar, Chile$25,000 – clay – 32S/16D Singles draw – Doubles draw Jim Courier 6–1, 6–1 Lawson Duncan Raúl Viver Ricardo Acuña Rubén Gajardo Ivan Kley Juan Pablo Queirolo Alberto Mancini Ricardo Acuña Luke Jensen 6–1, 6-4 Pablo Albano Fabián Blengino January 25 No tournaments scheduled.

February Week ofTournamentChampionsRunners-upSemifinalistsQuarterfinalists February 1 No tournaments scheduled. February 8 February 15February 22 Nairobi Challenger Nairobi, Kenya$25,000 – clay – 32S/16D Singles draw – Doubles draw Paul Wekesa 7–6, 3–6, 6–3 João Cunha e Silva Agustín Moreno Paolo Pambianco Bernhard Pils Stefan Lochbihler Daniel Deboer Giovanni Lelli Mami Bud Cox Stephan Medem 7–6, 4–6, 6–4 Ugo Colombini Agustín Moreno Vienna Challenger Vienna, Austria$25,000 – carpet (I) – 32S/16D Singles draw – Doubles draw Omar Camporese 7–6, 2–6, 6–2 Wojciech Kowalski Nevio Devide Brett Dickinson Gianluca Pozzi Richard Matuszewski Leonardo Lavalle Alessandro de Minicis Mark Basham Charles Beckman 6–3, 3–6, 6–3 Thomas Muster Michael Oberleitner February 29 No tournaments scheduled.

March Week ofTournamentChampionsRunners-upSemifinalistsQuarterfinalistsMarch 7 Palm Hills International Tennis Challenger Cairo, Egypt$75,000 – clay – 32S/16D Singles draw – Doubles draw Jordi Arrese 7–6, 6–2 Carlos di Laura Fernando Luna Eduardo Osta Jorge Bardou Roberto Argüello Juan Aguilera Josef Čihák Josef Čihák Cyril Suk 6–3, 6-2 Roberto Argüello Marcelo Ingaramo Madeira-1 Challenger Madeira, Portugal$75,000 – hard – 32S/16D Singles draw – Doubles draw Javier Sánchez 6–1, 6–1 David Lewis Nuno Marques Nduka Odizor João Cunha e Silva Pablo Arraya Michael Westphal Yahiya Doumbia David Felgate Nick Fulwood 7–5, 7-5 Jon Levine Nduka OdizorMarch 14 Marrakech Challenger Marrakesh, Morocco$75,000 – clay – 32S/16D Singles draw – Doubles draw Franco Davín 6–3, 2–6, 6–4 Jordi Arrese Alessandro Baldoni Pedro Rebolledo Tomás Carbonell Claudio Pistolesi Massimiliano Narducci Jean-Philippe Fleurian Christer Allgårdh Conny Falk 6–3, 6-2 Lawson Duncan Hans SchwaierMarch 21 Agadir Challenger Agadir, Morocco$75,000 – clay – 32S/16D Singles draw – Doubles draw Jordi Arrese 1–6, 6–3, 7–6 Franco Davín Ronald Agénor Claudio Pistolesi Juan Avendaño Alberto Tous Markus Rackl Josef Čihák Josef Čihák Cyril Suk 6–2, 6-2 José López-Maeso Alberto Tous Martinique Challenger Martinique, French West Indies$50,000 – hard – 32S/16D Singles draw – Doubles draw Patrick Baur 6–4, 7–5 Tom Nijssen Diego Pérez Bill Scanlon Christian Saceanu Ricardo Acuña Andrew Castle Todd Nelson Pieter Aldrich Diego Nargiso 7–5, 4–6, 6–4 Todd Nelson Roger Smith São Paulo-1 Challenger São Paulo, Brazil$25,000 – hard – 32S/16D Singles draw – Doubles draw Alberto Mancini 4–6, 6–3, 6–4 Fernando Roese Ivan Kley Jaime Oncins Raúl Viver Robinson Ureta Marcos Hocevar Nuno Marques Pablo Albano Dácio Campos 7–5, 6-4 Gustavo Luza Alberto ManciniMarch 28 S Tennis Masters Challenger Graz, Austria$50,000 – hard (I) – 32S/16D Singles draw – Doubles draw Alex Antonitsch 6–3, 6–4 Thomas Muster Leif Shiras Carl Limberger Stanislav Birner Claudio Panatta Goran Ivanišević Hans-Dieter Beutel Denys Maasdorp Torben Theine 6–4, 6-4 Stanislav Birner Alessandro de Minicis Guadeloupe Challenger Guadeloupe, French West Indies$25,000 – hard – 32S/16D Singles draw – Doubles draw Pieter Aldrich 7–5, 7–6 Paul Wekesa Éric Winogradsky Michael Westphal Arnaud Boetsch Glenn Michibata Roger Smith Dan Cassidy David Dowlen Marcel Freeman 6–3, 6-3 Russell Barlow Jonathan Canter San Luis Potosí Challenger San Luis Potosí, Mexico$25,000 – clay – 32S/16D Singles draw – Doubles draw Peter Doohan 6–4, 6–4 Agustín Moreno Roberto Saad Leonardo Lavalle Miguel Nido John Letts Jim Gurfein Gilberto Cicero Luis Herrera Javier Ordaz 4–6, 7–6, 6–4 Agustín Moreno Fernando Pérez Pascal

April Week ofTournamentChampionsRunners-upSemifinalistsQuarterfinalistsApril 4 Madeira-2 Challenger Madeira, Portugal$25,000 – hard – 32S/16D Singles draw – Doubles draw Francisco Roig 6-4, 1–0, Ret. Richard Fromberg Jason Stoltenberg Johan Anderson Carl Turich Gerald Marzenell Xavier Daufresne Shane Barr Jason Stoltenberg Todd Woodbridge 6–2, 6-4 David Felgate Nick FulwoodApril 11 Jerusalem Challenger Jerusalem, Israel$25,000 – hard – 32S/16D Singles draw – Doubles draw Gilad Bloom 6–1, 7–5 Christian Geyer Boaz Merenstein Morten Christensen Shahar Perkiss Amit Naor Lars Holmblad Tomer Zimmerman Shlomo Glickstein Shahar Perkiss 3–6, 6–3, 6–3 Menashe Tzur Ohad Weinberg Rio de Janeiro Open Rio de Janeiro, Brazil$75,000 – carpet – 32S/16D Singles draw – Doubles draw Javier Frana 7–5, 4–6, 6–3 Cássio Motta Kelly Evernden Steve Guy David Lewis Tim Wilkison Horacio de la Peña Jim Courier Bruce Derlin Tony Mmoh 6–7, 7–5, 6–3 Horacio de la Peña Javier FranaApril 18 Vilamoura Challenger Vilamoura, Portugal$25,000 – hard – 32S/16D Singles draw – Doubles draw Barry Moir 6–1, 6–2 Stéphane Bonneau Peter Doohan Nuno Marques Gerald Marzenell Vicente Solves Jorge Bardou Christer Allgårdh Peter Doohan Michael Fancutt 6–4, 6-3 Stéphane Bonneau Fabio SilberbergApril 25 Lisbon Challenger Lisbon, Portugal$50,000 – clay – 32S/16D Singles draw – Doubles draw Alberto Mancini 6–3, 6–2 Peter Doohan Fernando Luna Udo Riglewski Juan Avendaño João Cunha e Silva Alex Antonitsch José Daher Jason Stoltenberg Todd Woodbridge 6–3, 5–7, 6–4 Alex Antonitsch Udo Riglewski Nagoya Challenger Nagoya, Japan$50,000 – hard – 32S/16D Singles draw – Doubles draw Andrew Castle 6–1, 7–5 Tim Pawsat Shozo Shiraishi Shuzo Matsuoka John Letts Masayoshi Takeyari Peter Palandjian Joel Bailey Glenn Layendecker John Letts 7–6, 6-3 Steve Guy Shuzo Matsuoka

May Week ofTournamentChampionsRunners-upSemifinalistsQuarterfinalists May 2 No tournaments scheduled.May 9 São Paulo-2 Challenger São Paulo, Brazil$25,000 – hard – 32S/16D Singles draw – Doubles draw Mauro Menezes 7–5, 6–7, 6–4 Cássio Motta Júlio Góes José Daher Jaime Oncins Ivan Kley Jose Wasserfirer Roger Guedes Marcos Hocevar Alexandre Hocevar 6–4, 6–7, 6–4 Ivan Kley Fernando Roese Raleigh Challenger Raleigh, United States$25,000 – clay – 32S/16D Singles draw – Doubles draw Barry Moir 6–1, 6–2 Tobias Svantesson John Boytim Guillermo Rivas Kevin Moir Amit Naor Peter Palandjian Francisco Maciel David Macpherson Simon Youl 7–5, 7-5 John Sobel Phil Williamson Salzburg Challenger Salzburg, Austria$75,000 – clay – 32S/16D Singles draw – Doubles draw Bruno Orešar 6–2, 2–6, 6–2 Damir Keretić Leonardo Lavalle Christian Miniussi Thierry Champion Jean-Philippe Fleurian Tarik Benhabiles Eduardo Osta Damir Keretić Diego Pérez 6–2, 6-4 Jean-Philippe Fleurian Andreas Maurer Waiblingen Challenger Waiblingen, West Germany$25,000 – clay – 32S/16D Singles draw – Doubles draw Roland Stadler 6–4, 6–4 Frank Dennhardt Marcelo Ingaramo Roberto Argüello Christian Weis Richard Fromberg Wolfgang Popp Alexander Mronz Rikard Bergh Julian Barham 6–4, 7-5 Ugo Colombini Simone Colombo May 16 No tournaments scheduled. May 23May 30 Montabaur Challenger Montabaur, West Germany$25,000 – clay – 32S/16D Singles draw – Doubles draw Markus Rackl 6–3, 4–6, 7–5 Bruno Orešar Michael Robertson Rikard Bergh Christer Allgårdh Christian Geyer Massimo Cierro Carl Limberger João Cunha e Silva Wojciech Kowalski 6–2, 7-6 Wolfgang Popp Udo Riglewski

June Week ofTournamentChampionsRunners-upSemifinalistsQuarterfinalistsJune 6 Dijon Challenger Dijon, France$25,000 – carpet – 32S/16D Singles draw – Doubles draw Ronnie Båthman 7–6, 6–1 Tobias Svantesson Christian Geyer Givaldo Barbosa Michael Oberleitner Luke Jensen Gerardo Vacarezza Stéphane Bonneau Howard Endelman Gavin Pfitzner 7–6, 6–7, 6–4 Mihnea-Ion Năstase Fernando Pérez PascalJune 13 Parioli Challenger Rome, Italy$25,000 – clay – 32S/16D Singles draw – Doubles draw Massimo Cierro 6–1, 6–1 Thomas Haldin Simone Restelli Marcelo Hennemann Paolo Bardessa Juan Carlos Báguena Christian Geyer Stefan Lochbihler Andreas Lesch Torben Theine 6–3, 6-1 Massimo Cierro Alessandro de MinicisJune 20 Clermont-Ferrand Challenger Clermont-Ferrand, France$75,000 – clay – 32S/16D Singles draw – Doubles draw Marcelo Filippini 6–2, 7–6 Marcelo Ingaramo Jordi Arrese Hans Schwaier Juan Aguilera João Cunha e Silva Wojciech Kowalski Claudio Pistolesi Rill Baxter Jörgen Windahl 7–6, 6-4 Jean-Philippe Fleurian Andreas Maurer Salou Challenger Salou, Spain$25,000 – clay – 32S/16D Singles draw – Doubles draw Mark Koevermans 6–0, 6–2 Sergio Cortés Eduardo Osta Thomas Haldin David de Miguel Jean-Marc Piacentile Jesús Colás Gabriel Urpí Marcelo Hennemann Jean-Marc Piacentile 6–4, 6-1 Scott Patridge Otis SmithJune 27 Tarbes Challenger Tarbes, France$25,000 – clay – 32S/16D Singles draw – Doubles draw Eduardo Osta 7–6, 6–4 Jesús Colás Roberto Argüello César Kist Hans-Dieter Beutel Philippe Pech Gabriel Urpí Jörgen Windahl João Cunha e Silva Jörgen Windahl 6–2, 6-1 Eduardo Furusho César Kist

July