4‑Dec‑1972 | New York | Carpet | R32 | | | Frew Mcmillan [RSA] d. Belkin | 6-0 6-0 | | | | | | | | | |
17‑Sep‑1972 | Montreal WCT | | R32 | | | Frank Froehling [USA] d. Belkin | W/O | | | | | | | | | |
30‑Aug‑1972 | US Open | Grass | R128 | | | (11)Cliff Drysdale [RSA] d. Belkin | 5-5 RET | | | | | | | | | |
14‑Aug‑1972 | Montreal / Toronto | Clay | R64 | | | Onny Parun [NZL] d. Belkin | 6-7 6-3 6-1 | | | | | | | | | |
7‑Aug‑1972 | Indianapolis | Clay | R16 | | | (8)Bob Hewitt [RSA] d. Belkin | 6-4 7-5 | | | | | | | | | |
7‑Aug‑1972 | Indianapolis | Clay | R32 | | | Belkin d. Adriano Panatta [ITA] | 6-3 6-2 | | | | | | | | | |
7‑Aug‑1972 | Indianapolis | Clay | R64 | | | Belkin d. Jun Kuki [JPN] | 6-0 2-6 6-3 | | | | | | | | | |
30‑Jul‑1972 | Tanglewood | | R32 | | | Dick Stockton [USA] d. Belkin | 6-4 6-3 | | | | | | | | | |
12‑May‑1972 | Davis Cup AME SF: CAN vs MEX | Clay | RR | | | Belkin d. Joaquin Loyo Mayo [MEX] | 6-2 6-0 3-6 6-8 7-5 | | | | | | | | | |
12‑May‑1972 | Davis Cup AME SF: CAN vs MEX | Clay | RR | | | Belkin d. Raul Ramirez [MEX] | 7-5 6-4 6-2 | | | | | | | | | |
28‑Feb‑1972 | New York | | R64 | | | Alejandro Olmedo [PER] d. Belkin | 6-3 6-1 | | | | | | | | | |
20‑Feb‑1972 | Salisbury | Hard | R32 | | | Roscoe Tanner [USA] d. Belkin | 6-3 6-3 | | | | | | | | | |
20‑Feb‑1972 | Salisbury | Hard | R64 | | | Belkin d. Milan Holecek [CZE] | 6-3 6-4 | | | | | | | | | |
6‑Feb‑1972 | Kansas City | | R16 | | | Ilie Nastase [ROU] d. Belkin | 6-4 6-0 | | | | | | | | | |
1‑Feb‑1972 | Omaha | Hard | R16 | | | Ilie Nastase [ROU] d. Belkin | 6-3 6-2 | | | | | | | | | |