World: Tour Championships - Los Angeles - Doubles - Main |
| Final | Clijsters K./Sugiyama A. | Ruano Pascual V./Suarez P. | 1:2 (4:6, 6:3, 3:6) | details | 14.11.2003 |
| Semi-finals | Clijsters K./Sugiyama A. | Black C./Likhovtseva E. | 2:0 (6:3, 6:4) | details | 13.11.2003 |
Switzerland: Zürich - Doubles - Main |
| Final | Clijsters K./Sugiyama A. | Ruano Pascual V./Suarez P. | 2:0 (7:6, 6:2) | details | 19.10.2003 |
| Semi-finals | Clijsters K./Sugiyama A. | Molik A./Serna M. | 2:0 (6:4, 6:2) | details | 18.10.2003 |
| Quarter-finals | Clijsters K./Sugiyama A. | Likhovtseva E./Martinez C. | 2:1 (4:6, 6:3, 6:1) | details | 17.10.2003 |
| 1/8-finals | Clijsters K./Sugiyama A. | Petrova N./Shaughnessy M. | 2:1 (3:6, 6:4, 6:4) | details | 14.10.2003 |
USA: US Open - Doubles - Main |
| 1/16-finals | Clijsters K./Sugiyama A. | McShea L./Musgrave T. | 0:0 WO. | details | 30.08.2003 |
| 1/32-finals | Clijsters K./Sugiyama A. | Dokic J./Morariu C. | 2:0 (6:2, 6:2) | details | 27.08.2003 |
USA: San Diego - Doubles - Main |
| Final | Davenport L./Raymond L. | Clijsters K./Sugiyama A. | 0:2 (4:6, 5:7) | details | 03.08.2003 |
| Semi-finals | Black C./Likhovtseva E. | Clijsters K./Sugiyama A. | 0:2 (1:6, 3:6) | details | 02.08.2003 |
| Quarter-finals | Pierce M./Stubbs R. | Clijsters K./Sugiyama A. | 1:2 (6:0, 4:6, 3:6) | details | 01.08.2003 |
| 1/8-finals | Vento-Kabchi M./Widjaja A. | Clijsters K./Sugiyama A. | 0:2 (4:6, 1:6) | details | 29.07.2003 |
United Kingdom: Wimbledon - Doubles - Main |
| Final | Ruano Pascual V./Suarez P. | Clijsters K./Sugiyama A. | 0:2 (4:6, 4:6) | details | 07.07.2003 |
| Semi-finals | Davenport L./Raymond L. | Clijsters K./Sugiyama A. | 1:2 (1:6, 6:0, 4:6) | details | 06.07.2003 |
| Quarter-finals | Kuznetsova S./Navratilova M. | Clijsters K./Sugiyama A. | 1:2 (6:4, 2:6, 4:6) | details | 05.07.2003 |
| 1/8-finals | Granville L./Stevenson A. | Clijsters K./Sugiyama A. | 0:2 (5:7, 2:6) | details | 29.06.2003 |
| 1/16-finals | Dragomir-Ilie R./Ehritt-Vanc A. | Clijsters K./Sugiyama A. | 0:2 (2:6, 2:6) | details | 27.06.2003 |
France: French Open - Doubles - Main |
| Final | Ruano Pascual V./Suarez P. | Clijsters K./Sugiyama A. | 1:2 (7:6, 2:6, 6:7) | details | 08.06.2003 |
| Semi-finals | Black C./Likhovtseva E. | Clijsters K./Sugiyama A. | 0:2 (1:6, 4:6) | details | 07.06.2003 |
| Quarter-finals | Matevzic M./Nagyova H. | Clijsters K./Sugiyama A. | 0:2 (2:6, 5:7) | details | 05.06.2003 |
| 1/8-finals | Daniilidou E./Grande R. | Clijsters K./Sugiyama A. | 0:2 (2:6, 0:6) | details | 04.06.2003 |
| 1/16-finals | Dementieva E./Krasnoroutskaya L. | Clijsters K./Sugiyama A. | 0:2 (4:6, 4:6) | details | 01.06.2003 |
Germany: Berlin - Doubles - Main |
| Final | Ruano Pascual V./Suarez P. | Clijsters K./Sugiyama A. | 2:1 (6:3, 4:6, 6:4) | details | 11.05.2003 |
| Semi-finals | Clijsters K./Sugiyama A. | Husarova J./Likhovtseva E. | 2:0 (6:1, 6:4) | details | 10.05.2003 |
| Quarter-finals | Clijsters K./Sugiyama A. | Dechy N./Loit E. | 2:1 (6:3, 3:6, 6:4) | details | 09.05.2003 |
| 1/8-finals | Clijsters K./Sugiyama A. | Dhenin C./De Los Rios R. | 2:0 (6:1, 6:0) | details | 07.05.2003 |
USA: Miami - Doubles - Main |
| Quarter-finals | Huber L./Maleeva M. | Clijsters K./Sugiyama A. | 1:0 RET. (6:4, 5:5) | details | 21.03.2003 |
| 1/8-finals | Clijsters K./Sugiyama A. | Dechy N./Loit E. | 2:0 (6:1, 6:0) | details | 19.03.2003 |
| 1/16-finals | Clijsters K./Sugiyama A. | Granville L./Taylor S. | 2:0 (6:2, 6:0) | details | 17.03.2003 |
USA: Indian Wells - Doubles - Main |
| Final | Clijsters K./Sugiyama A. | Davenport L./Raymond L. | 1:2 (6:3, 4:6, 1:6) | details | 09.03.2003 |
| Semi-finals | Ruano Pascual V./Suarez P. | Clijsters K./Sugiyama A. | 0:1 RET. (1:6, 1:1) | details | 08.03.2003 |
| Quarter-finals | Clijsters K./Sugiyama A. | Dementieva E./Grande R. | 2:0 (6:4, 6:0) | details | 07.03.2003 |
| 1/8-finals | Clijsters K./Sugiyama A. | Farina Elia S./Jidkova A. | 2:0 (6:2, 6:3) | details | 05.03.2003 |
| 1/16-finals | Clijsters K./Sugiyama A. | Muller M./Roesch A. | 2:0 (6:4, 6:0) | details | 03.03.2003 |
USA: Scottsdale - Doubles - Main |
| Final | Davenport L./Raymond L. | Clijsters K./Sugiyama A. | 0:2 (1:6, 4:6) | details | 02.03.2003 |
| Semi-finals | Bartoli M./Cohen-Aloro S. | Clijsters K./Sugiyama A. | 0:2 (5:7, 0:6) | details | 01.03.2003 |
| Quarter-finals | Irvin M./Stevenson A. | Clijsters K./Sugiyama A. | 0:2 (0:6, 3:6) | details | 28.02.2003 |
| 1/8-finals | De Villiers N./Steck J. | Clijsters K./Sugiyama A. | 0:2 (2:6, 0:6) | details | 25.02.2003 |
Belgium: Antwerp - Doubles - Main |
| Final | Clijsters K./Sugiyama A. | Dechy N./Loit E. | 2:0 (6:2, 6:0) | details | 16.02.2003 |
| Semi-finals | Clijsters K./Sugiyama A. | Bedanova D./Dokic J. | 2:0 (6:2, 6:0) | details | 15.02.2003 |
| Quarter-finals | Clijsters K./Sugiyama A. | Boogert K./Serna M. | 2:0 (6:2, 6:1) | details | 13.02.2003 |
| 1/8-finals | Clijsters K./Sugiyama A. | Henke V./Schaul C. | 2:0 (6:0, 6:0) | details | 10.02.2003 |
Australia: Australian Open - Doubles - Main |
| Quarter-finals | Williams S./Williams V. | Clijsters K./Sugiyama A. | 2:0 (6:4, 7:5) | details | 20.01.2003 |
| 1/8-finals | Freye K./Zaric D. | Clijsters K./Sugiyama A. | 0:2 (1:6, 1:6) | details | 18.01.2003 |
| 1/16-finals | Coetzer A./Steck J. | Clijsters K./Sugiyama A. | 0:2 (2:6, 4:6) | details | 16.01.2003 |
| 1/32-finals | Musgrave T./Tanasugarn T. | Clijsters K./Sugiyama A. | 0:2 (3:6, 5:7) | details | 13.01.2003 |
Australia: Sydney - Doubles - Main |
| Final | Clijsters K./Sugiyama A. | Martinez C./Stubbs R. | 2:0 (6:3, 6:3) | details | 12.01.2003 |
| Semi-finals | Dementieva E./Husarova J. | Clijsters K./Sugiyama A. | 1:2 (6:4, 2:6, 1:6) | details | 11.01.2003 |