ATP - Moskou | 10/16 08:00 | 25 | [107] Ricardas Berankis v Denis Istomin [89] | Retired | |
ATP - Moskou | 10/16 07:00 | 25 | Jeremy Chardy v Denis Istomin | Cancelled | |
Challenger Tashkent | 10/11 08:10 | 27 | [128] Felix A-Aliassime v Denis Istomin [87] | 7-6,6-3 | |
Challenger Tashkent | 10/10 07:40 | 26 | [217] Alexander Bublik v Denis Istomin [87] | 6-7,1-6 | |
Challenger Tashkent | 10/09 09:15 | 25 | [241] Federico Gaio v Denis Istomin [87] | 3-6,4-6 | |
Challenger Almaty 2 | 10/06 05:00 | 29 | [103] Denis Istomin v Nikola Milojevic [201] | 6-7,7-6,6-2 | |
Challenger Almaty 2 | 10/05 05:00 | 28 | [103] Denis Istomin v Lukas Rosol [177] | 3-6,6-3,6-4 | |
Challenger Almaty 2 | 10/04 06:35 | 27 | [103] Denis Istomin v Miomir Kecmanovic [163] | 6-3,6-4 | |
Challenger Almaty 2 | 10/03 04:30 | 26 | [103] Denis Istomin v Mohamed Safwat [196] | 6-2,6-1 | |
Challenger Almaty 2 | 10/01 08:20 | 25 | [103] Denis Istomin v Frederico Ferreira Silva [291] | 6-3,7-5 | |
ATP - St Petersburg | 09/19 10:00 | 25 | [87] Mikhail Kukushkin v Denis Istomin [61] | Retired | |
Davis Cup | 09/16 11:00 | 26 | Cameron Norrie v Denis Istomin | Cancelled | |
Davis Cup | 09/14 12:00 | 26 | [222] Daniel Evans v Denis Istomin [60] | 7-6,4-6,0-6,6-4,7-5 | |
Challenger - Chicago | 09/09 17:30 | 29 | [173] Reilly Opelka v Denis Istomin [76] | 4-6,2-6 | |
Challenger - Chicago | 09/08 16:00 | 28 | [175] Bjorn Fratangelo v Denis Istomin [76] | 1-6,2-6 | |
Challenger - Chicago | 09/07 18:55 | 27 | [128] Ruben Bemelmans v Denis Istomin [76] | 3-6,4-6 | |
Challenger - Chicago | 09/06 20:45 | 26 | [370] Tommy Paul v Denis Istomin [76] | 5-7,3-6 | |
Challenger - Chicago | 09/05 21:00 | 25 | [146] Marcelo Arevalo v Denis Istomin [76] | 4-6,1-6 | |
US Open | 08/27 22:20 | 23 | [76] Denis Istomin v Steve Johnson [31] | 3-6,6-7,3-6 | |
ATP - Kitzbühel | 08/04 12:00 | 29 | [112] Martin Klizan v Denis Istomin [95] | 6-2,6-2 | |
ATP - Kitzbühel | 08/03 11:00 | 28 | [53] Nicolas Jarry v Denis Istomin [95] | 5-7,7-6,4-6 | |
ATP - Kitzbühel | 08/02 11:00 | 27 | [47] Maximilian Marterer v Denis Istomin [95] | 3-6,3-6 | |
ATP - Kitzbühel | 08/01 11:00 | 26 | [95] Denis Istomin v Philipp Kohlschreiber [29] | 5-7,6-3,6-1 | |
ATP - Kitzbühel | 07/30 11:40 | 25 | [95] Denis Istomin v Federico Delbonis [107] | 7-6,6-2 | |
ATP Kitzbuhel Qual | 07/29 11:25 | 164 | [90] Denis Istomin v Thiago Monteiro [146] | 6-1,6-7,7-5 | |
ATP Kitzbuhel Qual | 07/28 10:30 | 64 | [90] Denis Istomin v Elliot Benchetrit [289] | 6-3,6-2 | |
ATP - Gstaad | 07/24 09:55 | 25 | [101] Laslo Djere v Denis Istomin [90] | 7-6,7-5 | |
ATP - Båstad | 07/17 11:25 | 25 | [91] Denis Istomin v Mikael Ymer [337] | 3-6,3-6 | |
Wimbledon | 07/03 12:05 | 23 | [18] Nick Kyrgios v Denis Istomin [92] | 7-6,7-6,6-7,6-3 | |
ATP - Eastbourne | 06/27 10:00 | 26 | [31] Marco Cecchinato v Denis Istomin [91] | 4-6,6-4,7-5 |
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.