| 25‑Aug‑2003 | US Open | Hard | R128 | 96 | 12 | (12)Sjeng Schalken [NED] d. Boutter | 6-2 6-3 6-2 | | 0.60 | 5.3% | 10.7% | 54.7% | 58.5% | 50.0% | 7/12 | 1:31 |
| 21‑Jul‑2003 | Kitzbuhel | Clay | R64 | 99 | 152 | Michel Kratochvil [SUI] d. Boutter | 6-3 6-3 | | 0.62 | 4.8% | 8.1% | 56.5% | 48.6% | 51.9% | 3/7 | 1:11 |
| 14‑Jul‑2003 | Stuttgart | Clay | R64 | 95 | 98 | Tomas Behrend [GER] d. Boutter | 3-6 6-2 6-1 | | 0.73 | 1.5% | 6.0% | 77.6% | 69.2% | 26.7% | 2/6 | 1:21 |
| 23‑Jun‑2003 | Wimbledon | Grass | R128 | 95 | 159 | (LL)Stefano Galvani [ITA] d. Boutter | 6-3 2-6 1-6 6-2 8-6 | | 1.00 | 18.6% | 13.2% | 53.5% | 73.9% | 48.3% | 4/11 | 2:43 |
| 26‑May‑2003 | Roland Garros | Clay | R128 | 95 | 18 | (17)Yevgeny Kafelnikov [RUS] d. Boutter | 6-1 6-2 6-4 | | 0.54 | 10.3% | 11.5% | 49.4% | 62.8% | 34.1% | 7/13 | 1:39 |
| 28‑Apr‑2003 | Aix En Provence CH | Clay | R16 | 69 | 119 | Scott Draper [AUS] d. (4)Boutter | 6-4 4-6 7-6(2) | | | | | | | | | |
| 28‑Apr‑2003 | Aix En Provence CH | Clay | R32 | 69 | 148 | (4)Boutter d. Vadim Kutsenko [RUS] | 6-4 6-1 | | | | | | | | | |
| 14‑Apr‑2003 | Monte Carlo Masters | Clay | QF | 82 | 4 | (2)Carlos Moya [ESP] d. (WC)Boutter | 7-6(4) 6-2 | | 0.87 | 3.4% | 3.4% | 61.0% | 50.0% | 65.2% | 1/5 | 1:20 |
| 14‑Apr‑2003 | Monte Carlo Masters | Clay | R16 | 82 | 14 | (WC)Boutter d. (9)Sjeng Schalken [NED] | 7-6(3) 6-4 | | 1.17 | 8.5% | 3.7% | 56.1% | 76.1% | 58.3% | 7/8 | 1:45 |
| 14‑Apr‑2003 | Monte Carlo Masters | Clay | R32 | 82 | 11 | (WC)Boutter d. (7)Paradorn Srichaphan [THA] | 6-4 4-6 6-4 | | 1.32 | 8.2% | 1.2% | 60.0% | 82.4% | 52.9% | 3/5 | 1:59 |
| 14‑Apr‑2003 | Monte Carlo Masters | Clay | R64 | 82 | 31 | (WC)Boutter d. Max Mirnyi [BLR] | 7-6(6) 3-6 6-3 | | 1.05 | 15.5% | 9.7% | 59.2% | 73.8% | 57.1% | 4/5 | 2:06 |
| 7‑Apr‑2003 | Casablanca | Clay | F | 102 | 17 | Boutter d. (1)Younes El Aynaoui [MAR] | 6-2 2-6 6-1 | | 1.28 | 1.4% | 9.9% | 60.6% | 79.1% | 46.4% | 5/7 | 1:38 |
| 7‑Apr‑2003 | Casablanca | Clay | SF | 102 | 56 | Boutter d. (4)Dominik Hrbaty [SVK] | 6-3 6-4 | | 1.25 | 8.2% | 8.2% | 67.2% | 70.7% | 50.0% | 1/3 | 1:10 |
| 7‑Apr‑2003 | Casablanca | Clay | QF | 102 | 82 | Boutter d. Flavio Saretta [BRA] | 7-5 7-6(5) | | 1.05 | 3.2% | 6.5% | 50.5% | 72.3% | 60.9% | 8/9 | 2:04 |
| 7‑Apr‑2003 | Casablanca | Clay | R16 | 102 | 83 | Boutter d. Luis Horna [PER] | 6-7(4) 6-3 6-4 | | 0.99 | 17.3% | 12.5% | 54.8% | 80.7% | 53.2% | 6/7 | 2:01 |
| 7‑Apr‑2003 | Casablanca | Clay | R32 | 102 | 81 | Boutter d. Davide Sanguinetti [ITA] | 7-5 7-6(0) | | 1.39 | 10.3% | 4.4% | 55.9% | 71.1% | 66.7% | 3/6 | 1:32 |
| 24‑Mar‑2003 | Barletta CH | Clay | R32 | 105 | 120 | Tomas Behrend [GER] d. (7)Boutter | 6-3 6-2 | | | | | | | | | |
| 17‑Mar‑2003 | Cagliari CH | Clay | SF | 105 | 152 | Rafael Nadal [ESP] d. (1)Boutter | 6-3 3-6 7-5 | | | | | | | | | |
| 17‑Mar‑2003 | Cagliari CH | Clay | QF | 105 | 120 | (1)Boutter d. (8)Tomas Behrend [GER] | 6-1 6-3 | | | | | | | | | |
| 17‑Mar‑2003 | Cagliari CH | Clay | R16 | 105 | 155 | (1)Boutter d. Mario Radic [CRO] | 6-4 6-3 | | | | | | | | | |
| 17‑Mar‑2003 | Cagliari CH | Clay | R32 | 105 | 268 | (1)Boutter d. (WC)Federico Luzzi [ITA] | 6-4 6-2 | | | | | | | | | |
| 3‑Mar‑2003 | Besancon CH | Hard | R32 | 91 | 210 | (WC)Julien Benneteau [FRA] d. (1)Boutter | 2-6 7-6(5) 6-4 | | | | | | | | | |
| 30‑Dec‑2002 | Doha | Hard | R32 | 77 | 22 | (3)Younes El Aynaoui [MAR] d. Boutter | 6-4 6-4 | | 0.66 | 16.9% | 4.2% | 59.2% | 73.8% | 44.8% | 8/10 | 1:19 |