| 1996-04-05 | Davis Cup G1 QF: FIN vs ROU | Carpet | RR | 195 |  Tuomas Ketola | 324 |  George Cosac | 6-3 7-6(1) | H2H | 3 | - | - | - | - | - | - | - |
| 1995-09-11 | Bucharest | Clay | R32 | 13 |  Sergi Bruguera (3) | 301 | George Cosac (Q) | 7-6(3) 6-2 | H2H | 3 | 100 | 5 | 0 | 49.3% | 71.4% | 66.7% | 5/6 |
| 1990-05-04 | Davis Cup G1 SF: ROU vs GBR | Clay | RR | 289 |  Danny Sapsford | 697 | George Cosac | 4-6 6-1 6-2 6-3 | H2H | 5 | - | - | - | - | - | - | - |
| 1990-05-04 | Davis Cup G1 SF: ROU vs GBR | Clay | RR | 73 | Jeremy Bates | 697 | George Cosac | 3-6 6-1 6-2 6-2 | H2H | 5 | - | - | - | - | - | - | - |
| 1990-02-02 | Davis Cup G1 QF: IRL vs ROU | Carpet | RR | 1061 |  Eoin Collins | 580 | George Cosac | 6-4 6-4 3-6 3-6 9-7 | H2H | 5 | - | - | - | - | - | - | - |
| 1990-02-02 | Davis Cup G1 QF: IRL vs ROU | Carpet | RR | 580 | George Cosac | 906 |  Peter Wright | 3-6 4-6 6-3 6-4 6-3 | H2H | 5 | - | - | - | - | - | - | - |
| 1989-05-05 | Davis Cup G1 SF: SUI vs ROU | Clay | RR | 8 |  Jakob Hlasek | 508 | George Cosac | 6-1 1-6 7-5 6-3 | H2H | 5 | - | - | - | - | - | - | - |
| 1989-05-05 | Davis Cup G1 SF: SUI vs ROU | Clay | RR | 184 | Claudio Mezzadri | 508 | George Cosac | 7-6(5) 6-1 | H2H | 3 | - | - | - | - | - | - | - |
| 1989-04-10 | Athens | Clay | R16 | 210 |  Franco Davin | 651 | George Cosac | 6-2 6-0 | H2H | 3 | - | - | - | - | - | - | - |
| 1989-04-10 | Athens | Clay | R32 | 651 | George Cosac | 82 |  Andres Vysand (5) | 6-2 6-2 | H2H | 3 | - | - | - | - | - | - | - |
