5‑May‑1972 | Kansas City | Hard | QF | | | Clark Graebner [USA] d. Edlefsen | 3-6 6-3 6-3 | | | | | | | | | |
14‑Apr‑1971 | Jacksonville | Clay | F | | | Edlefsen d. Clark Graebner [USA] | 7-5 4-6 6-3 | | | | | | | | | |
7‑May‑1970 | Sacramento | Hard | QF | | | Edlefsen d. Clark Graebner [USA] | 6-3 6-2 | | | | | | | | | |
21‑Apr‑1970 | Houston | Clay | R16 | | | (3)Clark Graebner [USA] d. Edlefsen | 6-3 4-6 6-3 | | | | | | | | | |
7‑Apr‑1969 | Charlotte | Clay | R16 | | | Clark Graebner [USA] d. Edlefsen | 4-6 6-4 7-5 | | | | | | | | | |
8‑Feb‑1969 | Buffalo | Hard | SF | | | Clark Graebner [USA] d. Edlefsen | 6-3 6-2 | | | | | | | | | |
5‑Jul‑1965 | Milwaukee | Clay | R16 | | | Edlefsen d. Clark Graebner [USA] | 6-1 8-6 | | | | | | | | | |
6‑Aug‑1962 | South Orange | Grass | R16 | | | Edlefsen d. Clark Graebner [USA] | 1-6 13-11 7-5 | | | | | | | | | |