| 2012-10-21 | Valencia | Hard | R16 | 21 |  Alexandr Dolgopolov | 63 |  Gilles Muller | 6-4 6-4 | H2H | 3 | 80 | 6 | 1 | 59.6% | 96.4% | 68.4% | 0/0 |
| 2012-10-21 | Valencia | Hard | R32 | 63 | Gilles Muller | 15 |  Milos Raonic (8) | 7-5 7-6(1) | H2H | 3 | 98 | 8 | 3 | 62.2% | 87.0% | 42.9% | 4/5 |
| 2012-10-15 | Vienna | Hard | SF | 8 |  Juan Martin del Potro (1) | 81 | Gilles Muller | 7-6(4) 7-6(5) | H2H | 3 | 111 | 17 | 1 | 72.0% | 88.9% | 52.4% | 1/1 |
| 2012-10-15 | Vienna | Hard | QF | 81 | Gilles Muller | 82 |  Paolo Lorenzi | 6-3 6-4 | H2H | 3 | 76 | 10 | 0 | 53.8% | 89.3% | 66.7% | 0/0 |
| 2012-10-15 | Vienna | Hard | R16 | 81 | Gilles Muller | 37 |  Jurgen Melzer (4) | 6-3 3-6 7-6(4) | H2H | 3 | 112 | 18 | 1 | 69.5% | 71.9% | 64.0% | 1/3 |
| 2012-10-15 | Vienna | Hard | R32 | 81 | Gilles Muller | 75 |  Steve Darcis | 6-7(3) 6-4 6-3 | H2H | 3 | 148 | 16 | 4 | 70.0% | 81.0% | 40.7% | 3/4 |
| 2012-09-17 | Metz | Hard | R16 | 48 |  Nikolay Davydenko (8) | 66 | Gilles Muller | 7-5 6-4 | H2H | 3 | 85 | 5 | 1 | 76.6% | 75.5% | 60.0% | 2/2 |
| 2012-09-17 | Metz | Hard | R32 | 66 | Gilles Muller | 99 |  Paul-Henri Mathieu (WC) | 7-6(5) 6-4 | H2H | 3 | 93 | 14 | 2 | 66.7% | 86.4% | 63.6% | 2/2 |
| 2012-08-27 | US Open | Hard | R64 | 125 |  Lleyton Hewitt (WC) | 53 | Gilles Muller | 3-6 7-6(5) 6-7(5) 7-5 6-4 | H2H | 5 | 275 | 18 | 13 | 41.4% | 78.5% | 58.0% | 14/17 |
| 2012-08-27 | US Open | Hard | R128 | 53 | Gilles Muller | 29 | Mikhail Youzhny (28) | 2-6 3-6 7-5 7-6(6) 7-6(6) | H2H | 5 | 263 | 25 | 11 | 52.3% | 85.9% | 42.9% | 11/16 |
