| 2015-10-19 | Moscow | Hard | R16 | 27 |  Roberto Bautista Agut (2) | 97 |  Marsel Ilhan | 6-2 7-5 | H2H | 3 | 76 | 7 | 1 | 64.2% | 85.3% | 68.4% | 1/1 |
| 2015-10-19 | Moscow | Hard | R32 | 97 | Marsel Ilhan | 119 |  Tatsuma Ito (Q) | 6-3 6-4 | H2H | 3 | 83 | 7 | 1 | 51.7% | 83.9% | 55.2% | 3/3 |
| 2015-08-31 | US Open | Hard | R64 | 41 |  Benoit Paire | 84 | Marsel Ilhan | 6-3 3-6 6-4 6-3 | H2H | 5 | 123 | 10 | 3 | 49.5% | 83.0% | 55.6% | 4/7 |
| 2015-08-31 | US Open | Hard | R128 | 84 | Marsel Ilhan | 285 |  Radek Stepanek | 6-0 2-6 6-4 3-2 RET | H2H | 5 | 144 | 13 | 1 | 61.3% | 70.8% | 46.3% | 6/9 |
| 2015-08-23 | Winston-Salem | Hard | R64 | 36 |  Martin Klizan (Q) | 83 | Marsel Ilhan | 7-6(1) 6-2 | H2H | 3 | 77 | 8 | 5 | 38.2% | 95.2% | 70.6% | 0/0 |
| 2015-07-27 | Gstaad | Clay | R16 | 59 |  Santiago Giraldo (8) | 82 | Marsel Ilhan | 6-2 6-3 | H2H | 3 | 72 | 1 | 0 | 74.0% | 78.4% | 69.2% | 1/1 |
| 2015-07-27 | Gstaad | Clay | R32 | 82 | Marsel Ilhan | 108 |  Andrey Kuznetsov | 6-1 6-2 | H2H | 3 | 47 | 5 | 1 | 65.6% | 95.2% | 72.7% | 0/0 |
| 2015-07-20 | Bastad | Clay | R32 | 81 |  Ernests Gulbis | 77 | Marsel Ilhan | 6-2 6-0 | H2H | 3 | 57 | 5 | 3 | 65.9% | 88.9% | 42.9% | 2/2 |
| 2015-07-17 | Davis Cup G2 R2: TUR vs BLR | Hard | RR | 78 | Marsel Ilhan | 327 |  Egor Gerasimov | 6-7(8) 4-6 6-3 6-2 9-7 | H2H | 5 | - | - | - | - | - | - | - |
| 2015-07-17 | Davis Cup G2 R2: TUR vs BLR | Hard | RR | 78 | Marsel Ilhan | 241 | Dzmitry Zhyrmont | 6-7(6) 6-3 6-3 6-2 | H2H | 5 | - | - | - | - | - | - | - |
