| Challenger Liuzhou | 10/27 03:00 | 29 | [211] Denis Istomin v Alejandro Davidovich Fokina [93] | 3-6,7-5,6-7 | |
| Challenger Liuzhou | 10/26 03:00 | 28 | [211] Denis Istomin v Danilo Petrovic [195] | Retired | |
| Challenger Liuzhou | 10/25 03:55 | 27 | [239] Tung-Lin Wu v Denis Istomin [211] | 2-6,3-6 | |
| Challenger Liuzhou | 10/24 03:05 | 26 | [211] Denis Istomin v Steven Diez [136] | 4-6,7-6,6-0 | |
| Challenger Liuzhou | 10/23 04:55 | 25 | [211] Denis Istomin v Makoto Ochi [467] | 7-6,6-3 | |
| Challenger Ningbo | 10/15 07:45 | 25 | Tsung-Hua Yang v Denis Istomin | 3-6,6-3,6-2 | |
| Challenger Nur-Sultan 2 | 10/03 05:00 | 26 | [164] Denis Istomin v Ruben Bemelmans [225] | Retired | |
| Challenger Nur-Sultan 2 | 10/02 09:50 | 25 | [164] Denis Istomin v Julian Lenz [264] | 7-5,6-1 | |
| ATP - Chengdu | 09/22 03:00 | 164 | [91] Alexei Popyrin v Denis Istomin [163] | 6-3,3-6,7-5 | |
| ATP - Chengdu | 09/21 05:15 | 64 | [163] Denis Istomin v Bernard Tomic [106] | Retired | |
| Challenger - Istanbul | 09/15 12:30 | 29 | [72] Ugo Humbert v Denis Istomin [182] | 6-2,6-2 | |
| Challenger - Istanbul | 09/14 09:00 | 28 | [340] Botic Van De Zandschulp v Denis Istomin [182] | 3-6,6-3,3-6 | |
| Challenger - Istanbul | 09/13 09:00 | 27 | [182] Denis Istomin v Aleksandr Nedovyesov [217] | 6-3,6-4 | |
| Challenger - Istanbul | 09/12 10:15 | 26 | [182] Denis Istomin v Roberto Marcora [180] | 3-6,6-3,7-6 | |
| Challenger - Istanbul | 09/11 11:05 | 25 | [182] Denis Istomin v Mischa Zverev [293] | Retired | |
| Challenger New Haven | 09/05 14:00 | 26 | [139] Denis Istomin v Marcos Giron [151] | 6-2,6-7,3-6 | |
| Challenger New Haven | 09/04 19:20 | 25 | [139] Denis Istomin v Donald Young [197] | 6-4,6-3 | |
| US Open | 08/19 20:15 | 44 | [292] Mischa Zverev v Denis Istomin [139] | 7-6,7-6 | |
| ATP - Kitzbühel | 07/27 12:25 | 64 | [107] Denis Istomin v Lucas Miedler [247] | 1-6,3-6 | |
| ATP - Gstaad | 07/25 11:05 | 26 | [107] Denis Istomin v Dusan Lajovic [26] | 4-6,7-6,6-7 | |
| ATP - Gstaad | 07/23 15:20 | 25 | [107] Denis Istomin v Marc-Andrea Huesler [271] | 6-3,7-6 | |
| ATP - Newport | 07/15 20:05 | 25 | [107] Denis Istomin v Tennys Sandgren [72] | 4-6,7-5,4-6 | |
| Challenger Winnetka | 07/13 19:00 | 28 | [87] Bradley Klahn v Denis Istomin [115] | 6-2,6-3 | |
| Challenger Winnetka | 07/12 16:55 | 27 | [115] Denis Istomin v Ramkumar Ramanathan [151] | 6-2,7-5 | |
| Challenger Winnetka | 07/11 17:25 | 26 | [115] Denis Istomin v Collin Altamirano [268] | 6-3,6-0 | |
| Challenger Winnetka | 07/09 16:35 | 25 | Denis Istomin v Aziz Dougaz | 6-3,3-6,6-3 | |
| Wimbledon | 07/02 12:30 | 23 | [115] Denis Istomin v Cameron Norrie [55] | 2-6,4-6,4-6 | |
| ATP - Eastbourne | 06/22 10:00 | 64 | Paul Jubb v Denis Istomin | 6-2,5-7,7-6 | |
| Challenger - Ilkley | 06/19 16:30 | 25 | [105] Denis Istomin v Lukas Rosol [137] | 3-6,6-4,4-6 | |
| ATP - Stuttgart | 06/08 12:50 | 64 | [97] Denis Istomin v Dustin Brown [171] | 5-7,4-6 |
Wikipedia - Denis Istomin
Denis Olegovitsj Istomin (Russisch: Денис Олегович Истомин) (Orenburg, 7 september 1986) is een Oezbeeks tennisser. Hij is prof sinds 2001 en haalde in 2009 voor het eerst de top 100. Zijn hoogste plaats op de ATP-ranglijst is de 33e, die hij behaalde op 13 augustus 2012.
Istomin haalde vijf keer de finale van een ATP-toernooi, waarvan hij er twee kon winnen. Hij heeft in het enkelspel wel twaalf challengers op zijn naam staan. Zijn beste resultaat in het enkelspel op een grandslamtoernooi is de vierde ronde. In augustus 2018 won Istomin het tennistoernooi van de Aziatische Spelen 2018.