| ATP - Nur-Sultan | 10/25 06:00 | 26 | [109] Alexei Popyrin v Denis Istomin [177] | Retired | |
| Challenger - Istanbul | 10/19 07:00 | 25 | [127] Jason Jung v Denis Istomin [176] | Retired | |
| Challenger - Alicante | 10/13 10:15 | 25 | [176] Denis Istomin v Nicola Kuhn [246] | 6-7,3-6 | |
| Challenger - Parma | 10/06 08:00 | 25 | [169] Denis Istomin v Mitchell Krueger [187] | 4-6,4-6 | |
| Challenger - Biella | 10/03 10:30 | 27 | [169] Denis Istomin v Christopher O'Connell [112] | 3-6,3-6 | |
| Challenger - Biella | 10/01 13:00 | 26 | [268] Stefano Napolitano v Denis Istomin [169] | 3-6,4-6 | |
| Challenger - Biella | 09/29 11:00 | 25 | [169] Denis Istomin v Illya Marchenko [210] | 7-6,6-2 | |
| Davis Cup | 03/08 00:55 | 45 | Tommy Paul v Denis Istomin | 6-3,6-0 | |
| Davis Cup | 03/08 00:25 | 45 | [24] Taylor Fritz v Denis Istomin [156] | Cancelled | |
| Davis Cup | 03/07 03:00 | 45 | [38] Reilly Opelka v Denis Istomin [156] | 6-2,7-5 | |
| Challenger - Columbus | 03/01 17:00 | 29 | [165] Denis Istomin v Jeffrey John Wolf [163] | 4-6,2-6 | |
| Challenger - Columbus | 02/29 18:30 | 28 | [172] Jurij Rodionov v Denis Istomin [165] | 3-6,6-7 | |
| Challenger - Columbus | 02/28 17:35 | 27 | [254] Aleksandar Vukic v Denis Istomin [165] | 3-6,2-6 | |
| Challenger - Columbus | 02/27 18:45 | 26 | [270] Guilherme Clezar v Denis Istomin [165] | 3-6,1-6 | |
| Challenger - Columbus | 02/26 21:25 | 25 | [353] Alexander Cozbinov v Denis Istomin [165] | 2-6,2-6 | |
| ATP - Delray Beach | 02/18 18:30 | 25 | [164] Denis Istomin v Milos Raonic [37] | 2-6,2-6 | |
| ATP - Delray Beach | 02/16 16:00 | 164 | [269] Noah Rubin v Denis Istomin [161] | 6-4,3-6,7-6 | |
| ATP - Delray Beach | 02/15 16:30 | 64 | [163] Guillermo Garcia-Lopez v Denis Istomin [161] | 5-7,2-6 | |
| ATP - New York | 02/09 20:35 | 64 | [190] Bernard Tomic v Denis Istomin [164] | 7-6,4-6,7-6 | |
| Challenger - Dallas | 02/06 22:15 | 26 | [164] Denis Istomin v Dominik Koepfer [92] | 6-7,3-6 | |
| Challenger - Dallas | 02/05 18:35 | 25 | [164] Denis Istomin v Alejandro Tabilo [172] | 6-2,4-6,7-6 | |
| Challenger - Newport Beach | 01/31 22:40 | 27 | [271] Thai-Son Kwiatkowski v Denis Istomin [170] | 7-6,6-4 | |
| Challenger - Newport Beach | 01/30 18:00 | 26 | [170] Denis Istomin v Frances Tiafoe [50] | 6-3,6-2 | |
| Challenger - Newport Beach | 01/29 19:00 | 25 | Denis Istomin v Sekou Bangoura | 7-6,6-4 | |
| Challenger - Bangkok 2 | 01/23 04:30 | 26 | [170] Denis Istomin v Federico Gaio [151] | 4-6,2-6 | |
| Challenger - Bangkok 2 | 01/21 05:45 | 25 | [170] Denis Istomin v Santiago Giraldo [277] | 6-3,7-6 | |
| Challenger - Bangkok | 01/15 04:30 | 26 | [275] Borna Gojo v Denis Istomin [174] | 6-3,6-0 | |
| Challenger - Bangkok | 01/14 04:45 | 25 | [334] Jack Draper v Denis Istomin [174] | 4-6,2-6 | |
| Australian Open - WC | 12/04 04:00 | 26 | [321] Yunseong Chung v Denis Istomin [179] | 7-5,6-3 | |
| Challenger Shenzhen 2 | 10/30 06:05 | 25 | [236] Roman Safiullin v Denis Istomin [175] | Retired |
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.