| 2020-11-09 | Sofia | Hard | R32 | 62 |  Gilles Simon (Q) | 105 |  Andrej Martin | 6-2 6-2 | H2H | 3 | 80 | 2 | 0 | 55.1% | 74.1% | 68.2% | 1/1 |
| 2020-10-12 | Sardinia | Clay | R32 | 58 |  Tommy Paul (7) | 100 | Andrej Martin (LL) | 5-7 6-3 7-5 | H2H | 3 | 158 | 5 | 6 | 61.6% | 66.2% | 45.8% | 7/12 |
| 2020-09-28 | Roland Garros | Clay | R64 | 20 |  Grigor Dimitrov (18) | 102 | Andrej Martin | 6-4 7-6(5) 6-1 | H2H | 5 | 135 | 4 | 2 | 70.9% | 68.5% | 63.3% | 6/8 |
| 2020-09-28 | Roland Garros | Clay | R128 | 102 | Andrej Martin | 77 |  Joao Sousa | 7-5 6-1 6-2 | H2H | 5 | 110 | 2 | 3 | 64.6% | 68.6% | 71.4% | 3/5 |
| 2020-08-31 | US Open | Hard | R128 | 28 |  Alex de Minaur (21) | 98 | Andrej Martin | 6-4 6-3 7-5 | H2H | 5 | 131 | 2 | 4 | 60.8% | 69.5% | 55.3% | 6/8 |
| 2020-03-06 | Davis Cup QLS R1: CZE vs SVK | Clay | RR | 179 |  Lukas Rosol | 95 | Andrej Martin | 6-4 6-4 | H2H | 3 | 88 | 3 | 1 | 73.4% | 68.1% | 58.8% | 3/4 |
| 2020-03-06 | Davis Cup QLS R1: CZE vs SVK | Clay | RR | 64 | Jiri Vesely | 95 | Andrej Martin | 4-6 7-5 7-5 | H2H | 3 | 167 | 6 | 2 | 65.7% | 69.2% | 55.9% | 2/5 |
| 2020-02-24 | Santiago | Clay | R32 | 98 |  Alejandro Davidovich Fokina | 95 | Andrej Martin | 2-6 7-6(5) 6-3 | H2H | 3 | 152 | 3 | 3 | 65.0% | 69.7% | 46.3% | 8/11 |
| 2020-02-17 | Rio De Janeiro | Clay | R32 | 25 |  Cristian Garin (3) | 94 | Andrej Martin | 4-6 7-5 7-6(5) | H2H | 3 | 189 | 3 | 5 | 55.8% | 75.9% | 50.0% | 4/8 |
| 2020-02-10 | Buenos Aires | Clay | R32 | 134 |  Facundo Bagnis (Q) | 93 | Andrej Martin (SE) | 6-4 6-1 | H2H | 3 | 84 | 4 | 1 | 66.7% | 76.5% | 58.8% | 0/1 |
