World: Davis Cup - Singles - Main
Llodra M. Okun N. 2:0 (6:3, 7:65 ) details 03.02.2013
Israel: Ramat Hasharon - Singles - Main
Semi-finals Lammer M. Okun N. 2:1 (2:6, 6:3, 6:4) details 18.05.2012
Quarter-finals Ben Zvi G. Okun N. 0:2 (1:6, 3:6) details 17.05.2012
1/8-finals Okun N. Botti K. 2:0 (6:2, 6:1) details 16.05.2012
1/16-finals Okun N. Jones J. 2:0 (6:2, 6:0) details 15.05.2012
Russia: St. Petersburg - Singles - Qualification
Semi-finals Luncanu P. Okun N. 2:1 (3:6, 6:2, 7:6) details 24.10.2010
Quarter-finals Marfinsky D. Okun N. 0:2 (2:6, 3:6) details 23.10.2010
Russia: Moscow - Singles - Qualification
Quarter-finals Okun N. Recouderc L. 1:2 (1:6, 7:6, 5:7) details 16.10.2010
Uzbekistan: Tashkent - Singles - Main
1/16-finals Junaid R. Okun N. 2:1 (2:6, 6:3, 6:2) details 12.10.2010
Turkey: Izmir - Singles - Main
1/16-finals Okun N. Vasiliev M. CAN. details 20.09.2010
USA: US Open - Singles - Qualification
Final Okun N. Dodig I. 0:2 (4:6, 3:6) details 28.08.2010
Semi-finals Tomic B. Okun N. 1:2 (6:1, 3:6, 2:6) details 27.08.2010
Quarter-finals Johnson S. Okun N. 0:2 (4:6, 2:6) details 26.08.2010
USA: Binghamton - Singles - Main
Lindahl N. Okun N. CAN. details 10.08.2010
USA: Winnetka - Singles - Main
1/16-finals Okun N. Brugues-Davi A. 0:2 (6:7, 3:6) details 29.06.2010
United Kingdom: Wimbledon - Singles - Qualification
Quarter-finals Okun N. Ghedin R. 0:2 (6:7, 2:6) details 14.06.2010
Germany: Halle - Singles - Main
1/16-finals - 1. Round Okun N. Falla A. 0:2 (4:6, 3:6) details 09.06.2010
Uzbekistan: Fergana - Singles - Main
Quarter-finals Kudryavtsev A. Okun N. 2:0 (6:3, 6:2) details 20.05.2010
1/8-finals Uzakov V. Okun N. 0:2 (2:6, 2:6) details 19.05.2010
1/16-finals Ledovskikh M. Okun N. 0:2 (6:7, 6:7) details 18.05.2010
South Korea: Busan - Singles - Main
1/16-finals Okun N. Lim Y-K. 0:2 (1:6, 2:6) details 11.05.2010
Israel: Ramat Hasharon - Singles - Main
1/16-finals Niland C. Okun N. 2:1 (6:4, 4:6, 6:3) details 03.05.2010
Greece: Athens - Singles - Main
1/8-finals Okun N. Muller G. 0:2 (2:6, 2:6) details 22.04.2010
1/16-finals Haase R. Okun N. 1:2 (1:6, 7:5, 4:6) details 20.04.2010
South Africa: Johannesburg - Singles - Main
1/8-finals Okun N. Brown D. 1:2 (7:6, 5:7, 4:6) details 15.04.2010
1/16-finals Groth S. Okun N. 1:2 (0:6, 6:1, 6:7) details 13.04.2010
1/8-finals Okun N. Brown D. 0:2 (1:6, 1:6) details 05.04.2010
South Africa: Johannesburg - Singles - Main
1/16-finals Van der Merwe I. Okun N. 2:0 (7:6, 7:6) details 02.02.2010
Australia: Australian Open - Singles - Qualification
1/32-finals Przysiezny M. Okun N. 2:1 (2:6, 7:5, 6:1) details 14.01.2010
1/64-finals Okun N. Capdeville P. 2:1 (6:4, 6:7, 6:4) details 13.01.2010
India: Chennai - Singles - Qualification
Final Ward J. Okun N. 2:0 (6:2, 6:3) details 04.01.2010
Semi-finals Okun N. Ito T. 2:0 (6:2, 6:2) details 03.01.2010
Russia: Khanty Mansiysk - Singles - Main
Okun N. Mertl J. 1:2 (7:6, 6:7, 5:7) details 03.12.2009
Okun N. Fufygin M. 2:1 (6:7, 6:4, 6:1) details 02.12.2009
Finland: Helsinky - Singles - Main
Okun N. Kamke T. 0:1 RET. (4:6, 0:1) details 24.11.2009
Kazakhstan: Astana - Singles - Main
Phau B. Okun N. 2:0 (6:3, 7:5) details 04.11.2009
Okun N. Sergeyev I. 2:0 (6:3, 6:2) details 03.11.2009
Russia: Moscow - Singles - Qualification
Okun N. Marchenko I. 1:2 (3:6, 6:3, 4:6) details 18.10.2009
China: Shanghai - Singles - Qualification
Mayer F. Okun N. 2:0 (6:3, 6:4) details 11.10.2009
Okun N. Evans B. 1:0 RET. details 10.10.2009
USA: Winnetka - Singles - Main
1/8-finals Okun N. Jenkins S. 1:2 (6:2, 3:6, 4:6) details 02.07.2009
1/16-finals Cook L. Okun N. 0:2 (3:6, 4:6) details 30.06.2009
Italy: Cremona - Singles - Main
1/16-finals Bracciali D. Okun N. 2:1 (4:6, 6:3, 6:3) details 19.05.2009
Israel: Ramat Hasharon - Singles - Main
1/16-finals Sela D. Okun N. 2:0 (6:1, 6:1) details 05.05.2009
Greece: Rhodes - Singles - Main
1/16-finals Kim K. Okun N. 2:0 (6:4, 7:69 ) details 27.04.2009
South Africa: Johannesburg - Singles - Main
1/16-finals Klaasen R. Okun N. 2:0 (6:4, 7:66 ) details 14.04.2009
Thailand: Korat - Singles - Main
Quarter-finals Okun N. Ram R. 1:2 (6:4, 65 :7, 4:6) details 27.03.2009
1/8-finals Montcourt M. Okun N. 1:2 (3:6, 6:4, 5:7) details 25.03.2009
1/16-finals Okun N. Donskoy E. 2:0 (6:2, 6:3) details 24.03.2009