| 22‑Aug‑1957 | Kitzbuhel | Clay | R32 | | | Giuseppe Merlo [ITA] d. Hainka | 7-5 6-1 | | | | | | | | | |
| 10‑May‑1957 | Davis Cup EUR R2: AUT vs SWE | Clay | RR | | | Jan Erik Lundquist [SWE] d. Hainka | 6-2 6-4 9-7 | | | | | | | | | |
| 1‑Apr‑1957 | Cannes Carlton | Clay | R16 | | | Jackie Brichant [BEL] d. Hainka | 6-1 6-0 | | | | | | | | | |
| 1‑Apr‑1957 | Cannes Carlton | Clay | R32 | | | Hainka d. John Barrett [GBR] | 7-9 6-3 7-5 | | | | | | | | | |
| 1‑Apr‑1957 | Cannes Carlton | Clay | R64 | | | Hainka d. Fritjof Eisenlohr [FRG] | 7-5 6-4 | | | | | | | | | |
| 25‑Mar‑1957 | Cannes Gallia | Clay | R64 | | | Jean Claude Molinari [FRA] d. Hainka | 6-4 6-3 | | | | | | | | | |