Tour · 1978-07-31 · draw of 32
South Orange 1978
ClayFinal
| 🇦🇷 Guillermo Vilas | d. | 🇦🇷 Jose-Luis Clerc | 6-1 6-3 | H2H |
Semifinals
| 🇦🇷 Jose-Luis Clerc | d. | 🇺🇸 John McEnroe | 6-2 4-6 6-3 | H2H |
| 🇦🇷 Guillermo Vilas | d. | 🇭🇺 Balazs Taroczy | 7-6 6-1 | H2H |
Quarterfinals
| 🇭🇺 Balazs Taroczy | d. | 🇺🇸 Peter Fleming | 7-5 6-1 | H2H |
| 🇦🇷 Jose-Luis Clerc | d. | 🇬🇧 John Lloyd | 6-3 6-4 | H2H |
| 🇺🇸 John McEnroe | d. | 🇿🇦 Deon Joubert | 7-6 6-2 | H2H |
| 🇦🇷 Guillermo Vilas | d. | 🇺🇸 Jeff Borowiak | 6-4 3-6 6-2 | H2H |
Round of 16
| 🇿🇦 Deon Joubert | d. | 🇫🇷 Bernard Fritz | 1-6 7-6 6-2 | H2H |
| 🇺🇸 Jeff Borowiak | d. | 🇦🇺 Paul McNamee | W/O | H2H |
| 🇦🇷 Jose-Luis Clerc | d. | 🇨🇱 Patricio Cornejo | 6-3 6-4 | H2H |
| 🇺🇸 Peter Fleming | d. | 🇧🇴 Ramiro Benavides | 6-1 5-7 6-2 | H2H |
| 🇭🇺 Balazs Taroczy | d. | 🇦🇺 Peter McNamara | 3-6 6-3 6-4 | H2H |
| 🇬🇧 John Lloyd | d. | 🇦🇺 John James | 6-2 6-1 | H2H |
| 🇺🇸 John McEnroe | d. | 🇺🇸 Keith Richardson | 6-2 4-6 6-1 | H2H |
| 🇦🇷 Guillermo Vilas | d. | 🇨🇱 Belus Prajoux | 6-3 6-3 | H2H |
Round of 32
| 🇺🇸 Keith Richardson | d. | 🇺🇸 Eliot Teltscher | 2-6 7-6 6-1 | H2H |
| 🇨🇱 Belus Prajoux | d. | 🇷🇴 Ion Tiriac | 6-0 7-5 | H2H |
| 🇦🇺 Paul McNamee | d. | 🇫🇷 Christophe Roger-Vasselin | 7-6 6-2 | H2H |
| 🇦🇺 Peter McNamara | d. | 🇺🇸 Erick Iskersky | 6-0 5-7 6-2 | H2H |
| 🇿🇦 Deon Joubert | d. | 🇺🇸 Billy Martin | 6-2 6-4 | H2H |
| 🇦🇺 John James | d. | 🇦🇷 Ricardo Cano | 6-2 6-4 | H2H |
| 🇫🇷 Bernard Fritz | d. | 🇺🇸 Ferdi Taygan | 7-6 6-2 | H2H |
| 🇨🇱 Patricio Cornejo | d. | 🇫🇷 Francois Jauffret | 7-6 6-2 | H2H |
| 🇧🇴 Ramiro Benavides | d. | 🇿🇦 Raymond Moore | 6-4 0-6 6-4 | H2H |
| 🇺🇸 Jeff Borowiak | d. | 🇺🇸 Fritz Buehning | 6-4 6-1 | H2H |
| 🇦🇷 Jose-Luis Clerc | d. | 🇺🇸 Andy McCurry | 6-1 6-4 | H2H |
| 🇺🇸 Peter Fleming | d. | 🇺🇸 Jay Lapidus | 7-6 4-6 7-6 | H2H |
| 🇭🇺 Balazs Taroczy | d. | 🇨🇴 Alvaro Betancur | 7-6 6-0 | H2H |
| 🇬🇧 John Lloyd | d. | 🇨🇴 Ivan Molina | 6-4 6-3 | H2H |
| 🇺🇸 John McEnroe | d. | 🇺🇸 Rick Fagel | 6-2 6-3 | H2H |
| 🇦🇷 Guillermo Vilas | d. | 🇺🇸 Butch Seewagen | 6-2 6-0 | H2H |