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It was the 34th edition of the event known that year as the AIG Japan Open Tennis Championships, and was part of the International Series Gold of the 2006 ATP Tour, and of the Tier III Series of the 2006 WTA Tour.
The 2001 AIG Japan Open Tennis Championships was a tennis tournament played on outdoor hard courts at the Ariake Coliseum in Tokyo in Japan that was part of the International Series Gold of the 2001 ATP Tour and of Tier III of the 2001 WTA Tour.
The 2002 AIG Japan Open Tennis Championships was a tennis tournament played on outdoor hard courts at the Ariake Coliseum in Tokyo in Japan that was part of the International Series Gold of the 2002 ATP Tour and of Tier III of the 2002 WTA Tour.
The 2003 AIG Japan Open Tennis Championships was a tennis tournament played on outdoor hard courts at the Ariake Coliseum in Tokyo in Japan that was part of the International Series Gold of the 2003 ATP Tour and of Tier III of the 2003 WTA Tour.