Nao Hibino

2014

Hibino made her WTA main-draw debut at the Japan Women's Open, in the doubles event where she partnered Riko Sawayanagi. They lost in the first round to Yurika Sema and Erika Sema. Prior to her main-draw debut she had won four singles and two doubles titles on the ITF Women's Circuit. In 2015, she made her Grand Slam debut at the US Open where she defeated Anna Tatishvili in the first qualifying round.

2015

In 2015, Hibino reached the final of the Fukuoka International Women's Cup where she lost to Kristýna Plíšková. The following week she won the Kurume Best Amenity Cup, defeating Eri Hozumi in the final, 6–3, 6–1. Hibino made her debut at Wimbledon, defeating Ayumi Morita in the first qualifying round before losing to Anna Tatishvili. Her second $50,000 title came at the Stockton Challenge, defeating Belgian An-Sophie Mestach in the final. This was Hibino's first singles title outside Japan. Her rise continued when she continued her good results at the Gold River Challenge and the Kentucky Bank Tennis Championships, reaching the semifinals and winning the title, respectively. At the US Open, Hibino reached the final qualifying round, defeating Tereza Martincová and Eri Hozumi before losing to Kateryna Bondarenko.

At the Japan Open, Hibino won her first singles WTA main-draw match defeating Hiroko Kuwata in three sets, before she lost to Madison Brengle. Her success on the WTA Tour continued when she won her first WTA title at the Tashkent Open without dropping a set. Her wins were over Anhelina Kalinina, Kateryna Kozlova, Bojana Jovanovski and Donna Vekić in the final. This title gave Hibino a career-high ranking, breaking into the top 100 for the first time in her career.

Singles: 4 (1 title, 3 runner-ups)

Result	W–L	Date	Tournament	Tier	Surface	Opponent	Score
Win	1–0	Oct 2015	Tashkent Open, Uzbekistan	International	Hard	Donna Vekić	6–2, 6–2
Loss	1–1	Oct 2016	Tashkent Open, Uzbekistan	International	Hard	Kristýna Plíšková	3–6, 6–2, 3–6
Loss	1–2	Mar 2017	Malaysian Open, Malaysia	International	Hard	Ashleigh Barty	3–6, 2–6
Loss	1–3	Jul 2017	Jiangxi Open, China	International	Hard	Peng Shuai	3–6, 2–6

Doubles: 3 (1 title, 2 runners-up)

Result	W–L	Date	Tournament	Tier	Surface	Partner	Opponents	Score
Win	1–0	Apr 2017	Monterrey Open, Mexico	International	Hard	Alicja Rosolska	Dalila Jakupovic Nadiia Kichenok	6–2, 7–6(7–4)
Loss	1–1	Sep 2017	Tashkent Open, Uzbekistan	International	Hard	Oksana Kalashnikova	Tímea Babos Andrea Hlavackova	5–7, 4–6
Loss	1–2	Feb 2018	Taiwan Open, Taiwan	International	Hard (i)	Oksana Kalashnikova	Duan Yingying Wang Yafan	6–7(4–7), 6–7(5–7)

Singles: 12 (8–4)

Outcome	No.	Date	Tournament	Surface	Opponent	Score
Winner	1.	11 June 2012	Tokyo, Japan	Hard	Mari Tanaka	6–0, 6–2
Winner	2.	24 June 2012	Mie, Japan	Grass	Yurina Koshino	6–2, 0–6, 6–3
Winner	3.	15 September 2012	Kyoto, Japan	Carpet (i)	Yuuki Tanaka	6–4, 2–6, 6–2
Winner	4.	1 September 2013	Tsukuba, Japan	Hard	Erika Sema	6–4, 7–6(7–2)
Runner-up	1.	15 June 2014	Fergana, Uzbekistan	Hard	Nigina Abduraimova	3–6, 4–6
Runner-up	2.	10 May 2015	Fukuoka, Japan	Grass	Kristýna Plíšková	5–7, 4–6
Winner	5.	17 May 2015	Kurume, Japan	Grass	Eri Hozumi	6–3, 6–1
Winner	6.	19 July 2015	Stockton, USA	Hard	An-Sophie Mestach	6–1, 7–6(8–6)
Winner	7.	2 August 2015	Lexington, USA	Hard	Samantha Crawford	6–2, 6–1
Runner-up	3.	21 November 2015	Tokyo, Japan	Hard	Zhang Shuai	4–6, 1–6
Runner-up	4.	28 October 2017	Liuzhou, China	Hard	Wang Yafan	6–3, 4–6, 3–3 ret.
Winner	8.	16 July 2018	Honolulu, United States	Hard	Jessica Pegula	6–0, 6–2

Doubles: 10 (5–5)

Outcome	No.	Date	Tournament	Surface	Partner	Opponents	Score
Winner	1.	15 September 2012	Kyoto, Japan	Carpet (i)	Emi Mutaguchi	Miyu Kato Misaki Mori	6–4, 6–3
Runner-up	1.	5 May 2013	Gifu, Japan	Hard	Riko Sawayanagi	Luksika Kumkhum Erika Sema	4–6, 3–6
Winner	2.	20 May 2013	Goyang, South Korea	Hard	Akiko Omae	Yoo Mi Han Na-lae	6–4, 6–4
Runner-up	2.	15 June 2014	Fergana, Uzbekistan	Hard	Prarthana Thombare	Hiroko Kuwata Mari Tanaka	1–6, 4–6
Winner	3.	4 April 2015	Bangkok, Thailand	Hard	Miyu Kato	Miyabi Inoue Akiko Omae	6–4, 6–2
Runner-up	3.	11 April 2015	Ahmedabad, India	Hard	Prarthana Thombare	Peangtarn Plipuech Nungnadda Wannasuk	3–6, 6–2, [10–12]
Runner-up	4.	26 July 2015	Sacramento, United States	Hard	Rosie Johanson	Ashley Weinhold Caitlin Whoriskey	4–6, 6–3, [12–14]
Winner	4.	2 August 2015	Lexington, United States	Hard	Emily Webley-Smith	Nicha Lertpitaksinchai Peangtarn Plipuech	6–2, 6–2
Winner	5.	30 October 2016	Poitiers, France	Hard (i)	Alicja Rosolska	Alexandra Cadanțu Nicola Geuer	6–0, 6–0
Runner-up	5.	10 March 2018	Zhuhai, China	Hard	Danka Kovinić	Anna Blinkova Lesley Kerkhove	5–7, 4–6

Singles