| 17‑Sep‑2018 | St. Petersburg | Hard | R32 | 87 | 61 | Kukushkin d. Denis Istomin [UZB] | 7-5 2-4 RET | | 1.17 | 7.1% | 3.6% | 58.9% | 72.7% | 52.2% | 2/4 | 1:38 |
| 2‑May‑2016 | Madrid Masters | Clay | Q2 | 86 | 79 | (9)Denis Istomin [UZB] d. Kukushkin | 6-2 2-6 6-3 | | 0.86 | 0.0% | 0.0% | 69.7% | 56.5% | 55.6% | 10/14 | 1:56 |
| 22‑Feb‑2016 | Dubai | Hard | R32 | 84 | 63 | Kukushkin d. Denis Istomin [UZB] | 7-5 7-6(3) | | 1.45 | 4.7% | 0.0% | 60.9% | 74.4% | 72.0% | 0/2 | 1:42 |
| 4‑Jan‑2016 | Brisbane | Hard | R32 | 65 | 61 | Kukushkin d. Denis Istomin [UZB] | 6-2 7-5 | | 1.20 | 1.5% | 4.5% | 53.7% | 75.0% | 64.5% | 3/3 | 1:24 |
| 21‑Sep‑2015 | St. Petersburg | Hard | R32 | 48 | 62 | Denis Istomin [UZB] d. (8)Kukushkin | 7-6(4) 2-6 6-2 | | 0.92 | 2.1% | 2.1% | 53.7% | 72.5% | 47.7% | 1/4 | |
| 11‑Jan‑2015 | Sydney | Hard | R32 | 66 | 48 | (Q)Kukushkin d. Denis Istomin [UZB] | 6-3 7-6(1) | | 1.24 | 6.1% | 3.0% | 48.5% | 68.8% | 64.7% | 2/4 | 1:28 |
| 16‑Jun‑2014 | Eastbourne | Grass | R32 | 58 | 49 | Denis Istomin [UZB] d. Kukushkin | 7-6(6) 6-7(7) 6-3 | | 0.86 | 5.6% | 0.8% | 59.5% | 73.3% | 58.8% | 7/9 | 2:38 |
| 14‑Sep‑2012 | Davis Cup WG PO: KAZ vs UZB | Clay | RR | 70 | 34 | Kukushkin d. Denis Istomin [UZB] | 6-4 6-2 6-7(5) 6-2 | | | | | | | | | |
| 12‑Sep‑2011 | Istanbul CH | Hard | QF | 61 | 97 | (5)Denis Istomin [UZB] d. (2)Kukushkin | 6-1 6-3 | | 0.38 | 7.0% | 8.8% | 61.4% | 51.4% | 40.9% | 4/8 | 1:06 |
| 31‑Jul‑2006 | Saransk CH | Clay | R16 | 1167 | 197 | (1)Denis Istomin [UZB] d. (Q)Kukushkin | 4-6 7-5 6-2 | | | | | | | | | |
