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Year
Winners
Runners-Up
Score

Hana-cupid Japan Women's Open, Hiroshima
Women's Singles
WTA INTL.
2019
HIBINO, Nao
DOI, Misaki
6–3, 6–2
Japan Women's Open Tennis, Hiroshima
Women's Singles
WTA INTL.
2018
HSIEH, Su-Wei
ANISIMOVA, Amanda
6–2, 6–2
Hashimoto Sogyo Japan Women's Open Tennis, Tokyo
Women's Singles
WTA INTL.
2017
DIYAS, Zarina
KATO, Miyu
6–2, 7–5
2016
MCHALE, Christina
SINIAKOVA, Katerina
3-6, 6-4, 6-4
Japan Women's Open Tennis, Tokyo
Women's Singles
WTA INTL.
2015
WICKMAYER, Yanina
LINETTE, Magda
4-6, 6-3, 6-3
Japan Women's Open Tennis, Osaka
Women's Singles
WTA INTL.
2014
STOSUR, Samantha
DIYAS, Zarina
7-6, 6-3
HP Japan Women's Open Tennis, Osaka
Women's Singles
WTA INTL.
2013
STOSUR, Samantha
BOUCHARD, Eugenie
3-6, 7-5, 6-2
2012
WATSON, Heather
CHANG, Kai-Chen
7-5, 5-7, 7-6
2011
BARTOLI, Marion
STOSUR, Samantha
6-3, 6-1
2010
TANASUGARN, Tamarine
DATE, Kimiko
7-5, 6-7, 6-1
2009
STOSUR, Samantha
SCHIAVONE, Francesca
7-5, 6-1
AIG Japan Open, Tokyo
Women's Singles
WTA TIER III
2008
WOZNIACKI, Caroline
KANEPI, Kaia
6-2, 3-6, 6-1
AIG Japan Open Tennis Championships, Tokyo
Women's Singles
WTA TIER III
2007
RAZZANO, Virginie
WILLIAMS, Venus
4-6, 7-6, 6-4
AIG Japan Open, Tokyo
Women's Singles
WTA TIER III
2006
BARTOLI, Marion
NAKAMURA, Aiko
2-6, 6-2, 6-2
AIG Japan Open Tennis Championships, Tokyo
Women's Singles
WTA TIER III
2005
VAIDISOVA, Nicole
GOLOVIN, Tatiana
7-6, 3-2 retired