| 2018-09-15 | Davis Cup G2 R3: ROU vs POL | Clay | RR | 187 |  Kamil Majchrzak | 674 |  Adrian Ungur | 6-3 6-2 | H2H | 3 | 80 | 3 | 1 | 67.2% | 65.9% | 65.0% | 5/6 |
| 2018-09-15 | Davis Cup G2 R3: ROU vs POL | Clay | RR | 95 | Hubert Hurkacz | 674 | Adrian Ungur | 7-6(3) 7-5 | H2H | 3 | 91 | 12 | 2 | 70.1% | 80.9% | 80.0% | 1/1 |
| 2018-04-07 | Davis Cup G2 R2: ROU vs MAR | Hard | RR | 535 | Adrian Ungur | 571 | MARLamine Ouahab | 6-0 7-6(3) | H2H | 3 | 77 | 1 | 0 | 63.5% | 72.7% | 78.9% | 0/1 |
| 2017-02-03 | Davis Cup G1 R1: ROU vs BLR | - | RR | 313 | Adrian Ungur | 175 |  Ilya Ivashka | 6-2 5-7 7-5 6-4 | H2H | 5 | 183 | 5 | 3 | 70.6% | 66.3% | 57.1% | 8/11 |
| 2017-02-03 | Davis Cup G1 R1: ROU vs BLR | - | RR | 341 | Egor Gerasimov | 313 | Adrian Ungur | 7-6(5) 6-4 6-4 | H2H | 5 | 137 | 15 | 3 | 62.6% | 74.6% | 55.0% | 8/10 |
| 2016-07-15 | Davis Cup G1 R2: ESP vs ROU | Hard | RR | 15 |  Roberto Bautista Agut | 185 | Adrian Ungur | 6-3 6-2 6-1 | H2H | 5 | 95 | 6 | 1 | 71.4% | 75.6% | 72.2% | 1/2 |
| 2016-07-15 | Davis Cup G1 R2: ESP vs ROU | Hard | RR | 46 | Pablo Carreno Busta | 185 | Adrian Ungur | 6-3 7-6(5) | H2H | 3 | 74 | 4 | 1 | 61.0% | 88.9% | 56.5% | 1/2 |
| 2016-05-23 | Roland Garros | Clay | R128 | 123 |  Igor Sijsling | 203 | Adrian Ungur | 6-1 6-2 7-6(5) | H2H | 5 | 102 | 3 | 8 | 60.8% | 69.5% | 50.0% | 2/5 |
| 2016-04-25 | Istanbul | Clay | R16 | 29 |  Grigor Dimitrov (2) | 194 | Adrian Ungur (Q) | 7-5 4-6 7-5 | H2H | 3 | 133 | 4 | 1 | 75.8% | 71.0% | 54.5% | 2/5 |
| 2016-04-25 | Istanbul | Clay | R32 | 194 | Adrian Ungur (Q) | 110 |  Filip Krajinovic | 6-3 6-3 | H2H | 3 | 89 | 0 | 0 | 42.4% | 72.0% | 44.1% | 4/7 |
