| 2018-10-22 | Basel | Hard | F | 3 |  Roger Federer (1) | 93 |  Marius Copil (Q) | 7-6(5) 6-4 | H2H | 3 | 94 | 6 | 3 | 52.3% | 94.1% | 54.8% | 3/5 |
| 2018-10-22 | Basel | Hard | SF | 93 | Marius Copil (Q) | 5 |  Alexander Zverev (2) | 6-3 6-7(6) 6-4 | H2H | 3 | 151 | 26 | 6 | 52.8% | 84.8% | 44.1% | 6/6 |
| 2018-10-22 | Basel | Hard | QF | 93 | Marius Copil (Q) | 57 |  Taylor Fritz (WC) | 7-6(6) 7-5 | H2H | 3 | 112 | 18 | 3 | 53.3% | 77.6% | 53.5% | 10/11 |
| 2018-10-22 | Basel | Hard | R16 | 93 | Marius Copil (Q) | 6 |  Marin Cilic (3) | 7-5 7-6(2) | H2H | 3 | 108 | 21 | 0 | 54.9% | 89.7% | 59.4% | 2/2 |
| 2018-10-22 | Basel | Hard | R32 | 93 | Marius Copil (Q) | 59 | Ryan Harrison | 6-2 7-6(8) | H2H | 3 | 92 | 10 | 1 | 69.1% | 70.2% | 76.2% | 1/2 |
| 2018-10-15 | Stockholm | Hard | R32 | 102 | Bradley Klahn | 90 | Marius Copil | 6-2 3-6 6-4 | H2H | 3 | 92 | 8 | 3 | 61.5% | 79.2% | 53.3% | 3/4 |
| 2018-09-15 | Davis Cup G2 R3: ROU vs POL | Clay | RR | 95 |  Hubert Hurkacz | 81 | Marius Copil | 6-3 6-4 | H2H | 3 | 69 | 7 | 1 | 64.2% | 76.7% | 50.0% | 2/2 |
| 2018-09-15 | Davis Cup G2 R3: ROU vs POL | Clay | RR | 81 | Marius Copil | 187 | Kamil Majchrzak | 6-2 6-4 | H2H | 3 | 75 | 6 | 0 | 58.3% | 75.0% | 80.0% | 1/1 |
| 2018-08-27 | US Open | Hard | R128 | 7 | Marin Cilic (7) | 82 | Marius Copil | 7-5 6-1 1-1 RET | H2H | 5 | 95 | 13 | 6 | 56.8% | 76.2% | 40.6% | 7/9 |
| 2018-08-13 | Cincinnati Masters | Hard | R64 | 92 | Marius Copil (Q) | 35 | Philipp Kohlschreiber | 6-4 6-2 | H2H | 3 | 70 | 13 | 0 | 78.3% | 86.1% | 60.0% | 0/0 |
