| 2022-09-16 | Davis Cup WG1 R1: JPN vs UZB | Hard | RR | 353 |  Sho Shimabukuro | 420 |  Denis Istomin | 3-6 7-6(5) 7-6(9) | H2H | 3 | - | - | - | - | - | - | - |
| 2022-02-14 | Delray Beach | Hard | R16 | 41 |  Tommy Paul (4) | 267 | Denis Istomin (Q) | 6-2 6-0 | H2H | 3 | 60 | 7 | 4 | 62.2% | 85.7% | 47.1% | 4/4 |
| 2022-02-14 | Delray Beach | Hard | R32 | 267 | Denis Istomin (Q) | 117 | Sam Querrey | 6-1 7-6(5) | H2H | 3 | 70 | 7 | 3 | 72.7% | 85.0% | 60.0% | 1/1 |
| 2021-11-08 | Stockholm | Hard | R32 | 42 |  Filip Krajinovic | 248 | Denis Istomin (Q) | 6-4 6-2 | H2H | 3 | 63 | 4 | 1 | 54.3% | 88.0% | 71.4% | 0/0 |
| 2021-09-17 | Davis Cup WG1 R1: UZB vs NOR | Hard | RR | 381 |  Viktor Durasovic | 226 | Denis Istomin | 6-4 6-4 | H2H | 3 | 86 | 7 | 2 | 70.7% | 78.0% | 64.7% | 0/0 |
| 2021-07-24 | Tokyo Olympics | Hard | R64 | 160 |  Sumit Nagal | 197 | Denis Istomin | 6-4 6-7(6) 6-4 | H2H | 3 | - | - | - | - | - | - | - |
| 2021-05-31 | Roland Garros | Clay | R128 | 8 |  Roger Federer (8) | 204 | Denis Istomin (Q) | 6-2 6-4 6-3 | H2H | 5 | 93 | 8 | 0 | 70.8% | 80.4% | 78.9% | 0/0 |
| 2020-03-06 | Davis Cup QLS R1: USA vs UZB | Hard | RR | 38 | Reilly Opelka | 156 | Denis Istomin | 6-2 7-5 | H2H | 3 | 81 | 10 | 1 | 52.7% | 93.1% | 61.5% | 1/1 |
| 2020-03-06 | Davis Cup QLS R1: USA vs UZB | Hard | RR | 57 | Tommy Paul | 156 | Denis Istomin | 6-3 6-0 | H2H | 3 | 55 | 3 | 3 | 48.8% | 75.0% | 47.6% | 1/2 |
| 2020-02-17 | Delray Beach | Hard | R32 | 37 |  Milos Raonic (2) | 164 | Denis Istomin (LL) | 6-2 6-2 | H2H | 3 | 65 | 9 | 5 | 47.8% | 95.5% | 50.0% | 2/2 |
