| 2021-10-25 | Vienna | Hard | R32 | 12 |  Felix Auger-Aliassime (6) | 99 |  Ricardas Berankis (SE) | 6-3 6-2 | H2H | 3 | 94 | 5 | 3 | 57.7% | 80.0% | 59.1% | 2/3 |
| 2021-10-18 | Moscow | Hard | SF | 41 |  Marin Cilic (6) | 108 | Ricardas Berankis (LL) | 6-3 6-4 | H2H | 3 | 93 | 10 | 3 | 57.8% | 83.8% | 44.4% | 5/6 |
| 2021-10-18 | Moscow | Hard | QF | 108 | Ricardas Berankis (LL) | 51 |  Adrian Mannarino | 6-2 7-6(1) | H2H | 3 | 116 | 1 | 2 | 60.8% | 68.8% | 58.1% | 7/8 |
| 2021-10-18 | Moscow | Hard | R16 | 108 | Ricardas Berankis (LL) | 68 |  Federico Coria | 6-2 6-1 | H2H | 3 | 68 | 1 | 1 | 57.1% | 79.2% | 66.7% | 4/4 |
| 2021-10-18 | Moscow | Hard | R32 | 108 | Ricardas Berankis (LL) | 149 |  Evgeny Donskoy (WC) | 6-1 6-3 | H2H | 3 | 80 | 6 | 1 | 57.1% | 85.7% | 42.9% | 4/5 |
| 2021-09-20 | Nur-Sultan | Hard | R32 | 117 |  Carlos Taberner | 109 | Ricardas Berankis | 7-5 6-4 | H2H | 3 | 101 | 5 | 5 | 56.5% | 82.9% | 33.3% | 2/5 |
| 2021-09-18 | Davis Cup WG2 R1: LTU vs GRE | Hard | RR | 107 | Ricardas Berankis | 730 |  Petros Tsitsipas | 6-1 6-3 | H2H | 3 | 75 | 1 | 3 | 63.6% | 85.7% | 56.3% | 1/1 |
| 2021-08-30 | US Open | Hard | R128 | 14 | Diego Schwartzman (11) | 96 | Ricardas Berankis | 7-5 6-3 6-3 | H2H | 5 | 142 | 3 | 6 | 62.0% | 82.3% | 42.1% | 7/8 |
| 2021-08-09 | Canada Masters | Hard | R64 | 43 |  John Millman | 84 | Ricardas Berankis (Q) | 6-3 7-6(4) | H2H | 3 | 95 | 6 | 2 | 53.0% | 82.9% | 51.6% | 0/3 |
| 2021-08-02 | Washington | Hard | R64 | 86 | Ricardas Berankis | 174 |  Mitchell Krueger (Q) | 7-6(4) 6-2 | H2H | 3 | 93 | 2 | 1 | 64.7% | 81.8% | 58.3% | 2/2 |
