 Australia: Canberra - Doubles - Main |
|---|
| Quarter-finals | Curran C./Dekmeijere L. | Nakamura A./Obata S. | 2:1 (4:6, 6:3, 6:4) | details | 11.01.2006 |
| 1/8-finals | Nakamura A./Obata S. | Arvidsson S./Bammer S. | 2:1 (4:6, 7:5, 7:6) | details | 10.01.2006 |
 Thailand: Bangkok - Doubles - Main |
|---|
| 1/8-finals | Obata S./Musgrave T. | Asagoe S./Dulko G. | 0:2 (2:6, 3:6) | details | 12.10.2005 |
 South Korea: Seoul - Doubles - Main |
|---|
| Quarter-finals | Dushevina V./Peer S. | Nakamura A./Obata S. | 2:0 (6:1, 6:1) | details | 29.09.2005 |
| 1/8-finals | Dekmeijere L./Muller M. | Nakamura A./Obata S. | 0:2 (3:6, 2:6) | details | 28.09.2005 |
 United Kingdom: Wimbledon - Doubles - Main |
|---|
| 1/32-finals | Fujiwara R./Obata S. | Groenefeld A./Navratilova M. | 0:2 (3:6, 3:6) | details | 22.06.2005 |
| United Kingdom: Wimbledon - Doubles - Qualification |
|---|
| Final | Fujiwara R./Obata S. | Beltrame S./Pin C. | 2:0 (6:1, 6:3) | details | 16.06.2005 |
| Semi-finals | Jans-Ignacik K./Rosolska A. | Fujiwara R./Obata S. | 0:2 (1:6, 3:6) | details | 15.06.2005 |
 World: Fed Cup - World Group II - Doubles - Main |
|---|
| | Benesova I./Peschke K. | Morigami A./Obata S. | 2:1 (4:6, 6:3, 6:0) | details | 24.04.2005 |
 Japan: Tokyo 3 - Doubles - Main |
|---|
| Semi-finals | Hopkins J./Washington M. | Fujiwara R./Obata S. | 2:0 (6:3, 6:2) | details | 09.10.2004 |
| Quarter-finals | Fujiwara R./Obata S. | Jidkova A./Kurhajcova L. | 2:0 (6:3, 6:1) | details | 07.10.2004 |
| 1/8-finals | Fujiwara R./Obata S. | Chan C-W./Smith N. | 2:0 (6:4, 6:1) | details | 06.10.2004 |
| South Korea: Seoul - Doubles - Main |
|---|
| 1/8-finals | Asagoe S./Srebotnik K. | Obata S./Rao S. | 2:0 (6:2, 6:1) | details | 27.09.2004 |
 Indonesia: Bali - Doubles - Main |
|---|
| 1/8-finals | Nakamura A./Obata S. | Garbin T./Pratt N. | 0:2 (4:6, 3:6) | details | 15.09.2004 |
| World: Olympic Games - Doubles - Main |
|---|
| 1/8-finals | Morigami A./Obata S. | Suarez P./Tarabini P. | 0:2 (4:6, 2:6) | details | 18.08.2004 |
| 1/16-finals | Morigami A./Obata S. | Czink M./Kapros A. | 2:1 (3:6, 7:5, 6:3) | details | 15.08.2004 |
| United Kingdom: Wimbledon - Doubles - Qualification |
|---|
| Semi-finals | Schwartz B./Woehr J. | Harkleroad A./Obata S. | 2:1 (6:0, 1:6, 6:2) | details | 16.06.2004 |
USA: Indian Wells - Singles - Main
France: French Open - Singles - Qualification
China: Beijing - Singles - Main
Canada: Montreal - Singles - Main