| 21‑Jun‑2010 | Wimbledon Q | Grass | Q1 | 263 | 247 | Riccardo Ghedin [ITA] d. Okun | 7-6(1) 6-2 | | 0.96 | 3.4% | 3.4% | 70.7% | 63.4% | 47.1% | 1/4 | 1:50 |
| 23‑Jun‑2008 | Wimbledon Q | Grass | Q2 | 289 | 110 | (3)Frederico Gil [POR] d. Okun | 6-1 6-3 | | | | | | | | | |
| 23‑Jun‑2008 | Wimbledon Q | Grass | Q1 | 289 | 527 | Okun d. (WC)Ken Skupski [GBR] | 6-4 6-2 | | | | | | | | | |
| 25‑Jun‑2007 | Wimbledon Q | Grass | Q1 | 183 | 77 | (2)Nicolas Mahut [FRA] d. Okun | 7-5 6-3 | | | | | | | | | |
| 20‑Jun‑2005 | Wimbledon | Grass | R128 | 154 | 83 | Gael Monfils [FRA] d. (Q)Okun | 3-6 6-4 6-4 7-6(14) | | 0.84 | 5.7% | 2.1% | 64.5% | 74.7% | 48.0% | 6/9 | 2:51 |
| 24‑Jun‑2002 | Wimbledon | Grass | R128 | 110 | 98 | (LL)Jeff Morrison [USA] d. Okun | 6-3 7-6(3) 6-2 | | 0.73 | 3.2% | 7.4% | 61.7% | 65.5% | 38.9% | 5/11 | 1:48 |