| 1968-12-26 | Davis Cup WG CR: AUS vs USA | Grass | RR | - |  Clark Graebner | - |  Bill Bowrey | 8-10 6-4 8-6 3-6 6-1 | H2H | 5 | - | - | - | - | - | - | - |
| 1968-12-26 | Davis Cup WG CR: AUS vs USA | Grass | RR | - | Clark Graebner | - | Ray Ruffels | 3-6 8-6 2-6 6-3 6-1 | H2H | 5 | - | - | - | - | - | - | - |
| 1968-12-09 | Brisbane | Grass | R32 | - |  Adriano Panatta | - | Clark Graebner | 9-11 9-7 6-3 | H2H | 3 | - | - | - | - | - | - | - |
| 1968-11-11 | London-2 | Hard | R32 | - |  Keith Wooldridge | - | Clark Graebner (2) | 6-1 5-1 RET | H2H | 5 | - | - | - | - | - | - | - |
| 1968-11-09 | Davis Cup WG F: USA vs IND | Hard | RR | - | Clark Graebner | - |  Premjit Lall | 9-11 9-7 7-5 6-4 | H2H | 5 | - | - | - | - | - | - | - |
| 1968-11-09 | Davis Cup WG F: USA vs IND | Hard | RR | - | Ramanathan Krishnan | - | Clark Graebner | 7-5 4-6 6-2 6-1 | H2H | 5 | - | - | - | - | - | - | - |
| 1968-09-14 | Los Angeles-2 | Hard | QF | - | Rod Laver (1) | - | Clark Graebner (5) | 2-6 6-4 6-1 | H2H | 3 | - | - | - | - | - | - | - |
| 1968-09-14 | Los Angeles-2 | Hard | R16 | - | Clark Graebner (5) | - | Tony Roche (9) | 7-5 0-6 10-8 | H2H | 3 | - | - | - | - | - | - | - |
| 1968-09-14 | Los Angeles-2 | Hard | R32 | - | Clark Graebner (5) | - | Mal Anderson | 15-13 6-4 | H2H | 3 | - | - | - | - | - | - | - |
| 1968-09-14 | Los Angeles-2 | Hard | R64 | - | Clark Graebner (5) | - | Barry MacKay | 7-9 6-3 6-4 | H2H | 3 | - | - | - | - | - | - | - |
