Tour · 1973-02-12 · draw of 32
Calgary 1973
HardFinal
| 🇷🇴 Ilie Nastase | d. | 🇺🇸 Paul Gerken | 6-4 7-6 | H2H |
Semifinals
| 🇺🇸 Paul Gerken | d. | 🇪🇸 Juan Gisbert Sr | 6-1 5-7 6-3 | H2H |
| 🇷🇴 Ilie Nastase | d. | 🇷🇴 Ion Tiriac | 3-6 7-5 6-1 | H2H |
Quarterfinals
| 🇺🇸 Paul Gerken | d. | 🇿🇦 Pat Cramer | 3-6 6-3 7-6 | H2H |
| 🇷🇴 Ion Tiriac | d. | 🇩🇪 Jurgen Fassbender | 6-0 7-5 | H2H |
| 🇪🇸 Juan Gisbert Sr | d. | 🇩🇪 Karl Meiler | 6-4 6-4 | H2H |
| 🇷🇴 Ilie Nastase | d. | 🇬🇷 Nicholas Kalogeropoulos | 7-5 6-2 | H2H |
Round of 16
| 🇷🇴 Ion Tiriac | d. | 🇨🇦 Tony Bardsley | 7-5 7-6 | H2H |
| 🇩🇪 Karl Meiler | d. | 🇨🇿 Jan Kukal | 6-3 7-6 | H2H |
| 🇬🇷 Nicholas Kalogeropoulos | d. | 🇦🇺 Ian Fletcher | 7-6 7-5 | H2H |
| 🇺🇸 Paul Gerken | d. | 🇨🇦 Mike Belkin | 6-3 6-1 | H2H |
| 🇿🇦 Pat Cramer | d. | 🇦🇺 John Cooper | 7-5 6-2 | H2H |
| 🇩🇪 Jurgen Fassbender | d. | 🇭🇺 Peter Szoke | 6-7 6-2 6-4 | H2H |
| 🇪🇸 Juan Gisbert Sr | d. | 🇭🇺 Szabolcz Baranyi | 6-4 6-2 | H2H |
| 🇷🇴 Ilie Nastase | d. | 🇮🇳 Jasjit Singh | 7-5 6-4 | H2H |
Round of 32
| 🇷🇴 Ion Tiriac | d. | Freddie De Jesus | 4-6 6-3 6-2 | H2H |
| 🇭🇺 Peter Szoke | d. | 🇨🇿 Jiri Hrebec | 6-7 6-4 7-6 | H2H |
| 🇮🇳 Jasjit Singh | d. | 🇷🇴 Gavorielle Marcu | 7-6 6-3 | H2H |
| 🇩🇪 Karl Meiler | d. | 🇨🇱 Jaime Pinto-Bravo | 6-0 6-4 | H2H |
| 🇨🇿 Jan Kukal | d. | 🇨🇦 David Brown | 6-2 6-2 | H2H |
| 🇬🇷 Nicholas Kalogeropoulos | d. | 🇨🇦 Peter Burwash | 6-4 6-3 | H2H |
| 🇺🇸 Paul Gerken | d. | 🇨🇦 Don McCormick | 6-1 6-1 | H2H |
| 🇦🇺 Ian Fletcher | d. | 🇦🇷 Modesto Tito Vazquez | 7-5 6-7 6-2 | H2H |
| 🇿🇦 Pat Cramer | d. | 🇺🇸 Victor Amaya | 6-3 6-7 6-3 | H2H |
| 🇨🇦 Mike Belkin | d. | 🇦🇹 Hans Kary | 3-6 6-2 6-4 | H2H |
| 🇨🇦 Tony Bardsley | d. | 🇺🇸 Mike Estep | 7-6 7-6 | H2H |
| 🇩🇪 Jurgen Fassbender | d. | 🇺🇸 Franklin Robbins | 6-7 6-2 6-3 | H2H |