| date | Player 1 | sets | Player 2 | sets |
| | Ilie Nastase |  ROU | 1 | 3-0 | Elio "Lito" Alvarez |  ARG | | 7-6 6-3 6-2 |
| | Timothy Ernest (Tim) Gullikson |  USA | | 3-2 | Raymond J. (Ray) Moore |  RSA | | 6-4 6-1 6-7 5-7 6-1 |
| | Jorge Andrew |  VEN | | 3-0 | Juan Igancio Muntanola |  ESP | LL | 6-2 6-2 6-1 |
| | Karl Meiler |  GER | | 3-0 | James Edmund (Jim) Delaney | USA | | 6-1 6-2 6-2 |
| | Peter Blair Fleming | USA | | 3-0 | Sashi Menon |  IND | | 6-4 7-6 6-1 |
| | Jaime Pinto-Bravo |  CHI | LL | 3-1 | Eugene (Gene) Mayer | USA | | 4-6 6-4 6-4 2-0 Ret. |
| | Jan E. Norback |  SWE | | 3-0 | Russell John Simpson |  NZL | SE | 6-2 6-2 6-2 |
| | Jan Kodes |  TCH | 13 | 3-0 | Jun Kuki |  JPN | | 6-1 6-3 6-1 |
| | Vladimir Zednik | TCH | | 3-1 | Jaime Jose Fillol sr | CHI | 13 | 6-4 6-3 4-6 6-3 |
| | Patrice Dominguez |  FRA | | 3-0 | Victor C. Amaya | USA | | 7-5 6-2 6-4 |
| | Thomas Robert (Tom) Gullikson | USA | | 3-1 | Robin Wordsworth Drysdale |  ENG | q | 7-6 6-3 0-6 6-3 |
| | Thomaz Koch |  BRA | | 3-2 | Victor Pecci |  PAR | | 3-6 5-7 6-3 6-4 6-3 |
| | Christophe Casa | FRA | | 3-1 | Robert John (Bob) Carmichael |  AUS | SE | 1-6 7-6 6-2 7-5 |
| | Eric Deblicker | FRA | | 3-0 | Henry J. Bunis | USA | | 7-5 6-1 6-2 |
| | Trey H. Waltke | USA | | 3-1 | Gianni Ocleppo |  ITA | q | 6-3 5-7 7-6 6-2 |
| | Brian Edward Gottfried | USA | 5 | 3-0 | Ivan Molina |  COL | | 6-3 6-2 6-1 |
| | Eddie Dibbs | USA | 4 | 3-0 | C. Martin Robinson |  GBR | | 6-1 6-0 6-0 |
| | Rolf Norberg | SWE | | 3-2 | Pavel Slozil | TCH | q | 6-2 6-3 6-7 6-7 7-5 |
| | Emilio Montano |  MEX | | 3-0 | Werner Zirngibl | GER | | 6-1 6-1 6-3 |
| | Brian E. Fairlie | NZL | | 3-2 | Yannick Noah | FRA | | 6-1 6-3 6-7 6-7 6-2 |
| | John Patrick McEnroe | USA | q | 3-0 | Alvin R. Gardiner | AUS | SE | 6-3 6-4 6-0 |
| | Philip Clive (Phil) Dent | AUS | | 3-2 | Nikola (Niki) Pilic |  YUG | | 1-6 4-6 7-6 6-4 6-4 |
| | Barry Phillips-Moore | AUS | | 3-0 | Patricio Cornejo Seckel | CHI | | 6-4 6-4 6-0 |
| | Balazs Taroczy |  HUN | 15 | 3-0 | Nikola Spear | YUG | | 6-2 6-4 6-4 |
| | Hans G. Gildemeister | CHI | | 3-0 | Corrado Barazzutti | ITA | 11 | 6-4 6-3 6-3 |
| | Jean Francois Caujolle | FRA | | 3-1 | Terry Rocavert | AUS | q | 6-1 4-6 6-1 6-4 |
| | Christophe Roger-Vasselin | FRA | | 3-2 | Richard Lawrence (Dick) Bohrnstedt | USA | | 4-6 6-2 6-7 7-5 6-1 |
| | José Higueras | ESP | | 3-2 | Colin Sydney Dibley | AUS | | 3-6 2-6 7-6 6-0 8-6 |
| | Peter Elter |  FRG | q | 3-0 | John Michael Lloyd | ENG | | 7-6 6-4 6-4 |
| | William (Bill) Scanlon | USA | | 3-1 | Chris P. Kachel | AUS | | 6-3 1-6 6-4 6-1 |
| | Andrew J. Pattison |  ZIM | | 3-1 | Nick Saviano | USA | | 7-6 7-6 3-6 6-2 |
| | Harold Solomon | USA | 7 | 3-1 | John W. Feaver | GBR | | 6-3 6-4 3-6 6-2 |
| | Antonio Munoz | ESP | 7 | 3-2 | Tomas Smid | TCH | | 3-6 6-1 4-6 6-1 6-1 |
| | Rolf Gehring | FRG | LL | 3-2 | Jean Louis Haillet | FRA | | 6-0 6-7 7-6 5-7 6-1 |
| | Pavel Hutka | TCH | q | 3-2 | Jan Simbera | TCH | q | 6-4 4-6 5-7 6-1 6-0 |
| | Brian David Teacher | USA | | 3-1 | Alvaro Betancur | COL | | 7-6 6-4 4-6 6-0 |
| | Christopher John (Chris) Lewis | NZL | | 3-0 | Ricardo Ycaza |  ECU | q | 6-2 6-2 6-2 |
| | Ismael Adly El Shafei |  EGY | | 3-0 | James Stanford (Chico) Hagey | USA | | 6-4 6-2 6-2 |
| | Mark Ronald Edmondson | AUS | | 3-0 | Steven Elliott (Steve) Krulevitz | USA | | 6-4 6-2 6-3 |
| | Wojtek Fibak |  POL | 9 | 3-0 | Sherwood Earl Stewart | USA | | 6-3 6-2 7-5 |
| | Stanley Roger (Stan) Smith | USA | 9 | 3-0 | Richard D. (Dick) Crealy | AUS | | 7-6 6-4 6-2 |
| | Jurgen Fassbender | FRG | | 3-2 | Fred V. McNair III | USA | | 6-4 7-6 3-6 1-6 6-4 |
| | Dominique Bedel | FRA | q | 3-0 | Mike H. Machette | USA | | 6-2 6-1 6-2 |
| | Jiri Hrebec | TCH | | 3-1 | Onny Parun | NZL | | 2-6 6-2 6-3 6-4 |
| | Bernard (Bernie) Mitton |  ZAF | | 3-0 | Patrick (Pat) Dupre | USA | | 6-0 6-1 6-2 |
| | Colin Dowdeswell | ZIM | | 3-1 | Herve Gauvain | FRA | | 6-4 6-3 6-7 6-4 |
| | Belus Prajoux | CHI | | 3-0 | Ramiro Benavides |  BOL | | 6-0 6-2 7-6 |
| | Guillermo Vilas | ARG | 3 | 3-0 | Zeljko Franulovic | YUG | | 6-1 6-2 6-4 |
| | Raul Carlos Ramirez | MEX | 5 | 3-0 | Georges Goven | FRA | | 6-4 6-1 7-5 |
| | Jeff Borowiak | USA | | 2-0 | Robert Anthony John (Bob) Hewitt | ZAF | | 6-4 5-1 Ret. |
| | Ulrich (Ulli) Pinner | GER | | 3-0 | David Schneider | ZAF | | 6-0 6-4 6-2 |
| | Byron Maxwell Bertram | ZAF | | 3-0 | John T. Whitlinger | USA | | 6-2 6-1 6-2 |
| | Frantisek Pala | TCH | | 3-1 | Jairo Velasco Sr. | COL | | 6-3 6-2 3-6 6-4 |
| | Antonio Zugarelli | ITA | | 3-0 | Willem P.O. Prinsloo | ZAF | | 6-1 6-1 6-4 |
| | John McLaren Yuill | ZAF | | 3-0 | José Luis Moreno-Tallada | ESP | q | 6-4 6-1 6-2 |
| | Francois Jauffret | FRA | 15 | 3-2 | Frank Gebert | FRG | | 2-6 0-6 6-2 7-6 6-2 |
| | Patrick Proisy | FRA | | 3-0 | Robert Charles (Bob) Lutz | USA | 11 | 6-1 6-3 7-6 |
| | Christopher J. (Buster) Mottram | ENG | | 3-0 | Javier Soler | ESP | | 6-3 6-4 6-3 |
| | Paolo Bertolucci | ITA | | 3-0 | Ricardo Cano | ARG | | 6-1 6-0 6-3 |
| | Hans Kary |  AUT | | 3-1 | Richard A. Lewis | ENG | | 3-6 7-6 6-3 6-2 |
| | Kimberley Grant (Kim) Warwick | AUS | | 3-2 | Christophe C. Freyss | FRA | | 7-5 6-3 1-6 2-6 6-1 |
| | Paul Francis McNamee | AUS | SE | 3-2 | Kjell Johansson | SWE | | 6-3 6-4 1-6 2-6 6-2 |
| | Julian R. Ganzabal | ARG | | 3-2 | Billy Martin | USA | | 6-4 7-6 2-6 3-6 6-3 |
| | Adriano Panatta | ITA | 2 | 3-1 | Patrice Beust | FRA | q | 7-5 6-4 5-7 6-2 |
