2013

Partnering Sun Ziyue, Xu won her first $50k tournament at Sanya, defeating Yang Zhaoxuan and Zhao Yijing in the 2013 final.

2014

At the Shenzhen Open, Xu made her WTA Tour debut. Having been given a wild card into qualifying for the singles main draw, she was drawn against Britain's Johanna Konta. Despite a difference of over 500 places in the world rankings, Xu won in straight sets,^[1] but lost to Lyudmyla Kichenok in the final round. Partnering Sun Ziyue again in doubles at the tournament, Xu was given a wild card into the main draw,^[2] but couldn't make it past her fellow Chinese pairing of Wang Yafan and Zheng Jie,^[2] who later made it to the semifinals.^[2]

At the 2014 Summer Youth Olympics in Nanjing, Xu won the gold medal in girls' singles, having defeated Iryna Shymanovich of Belarus in straight sets in the final.^{[citation needed]}

Doubles: 1 (runner–up)

More information Result, Date ...

Result	Date	Tournament	Tier	Surface	Partner	Opponents	Score
Loss	Sep 2015	Guangzhou Open, China	International	Hard	You Xiaodi	Martina Hingis Sania Mirza	3–6, 1–6

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Singles: 7 (5 titles, 2 runner–ups)

More information Result, W–L ...

Result	W–L	Date	Tournament	Tier	Surface	Opponent	Score
Win	1–0	Dec 2013	ITF Hong Kong	10,000	Hard	Zhao Di	6–0, 6–3
Win	2–0	Dec 2013	ITF Hong Kong	10,000	Hard	Tang Haochen	6–1, 6–4
Loss	2–1	Jul 2015	ITF Hong Kong	15,000	Hard	Lee So-ra	4–6, 6–4, 2–6
Win	3–1	Jun 2016	ITF Padua, Italy	25,000	Clay	İpek Soylu	5–7, 6–4, 6–3
Loss	3–2	May 2018	ITF Baotou, China	60,000	Clay (i)	Nina Stojanovic	0–6, 4–6
Win	4–2	Oct 2018	ITF Brisbane, Australia	25,000	Hard	Ellen Perez	6–4, 6–3
Win	5–2	Nov 2018	Copa Colina, Chile	60,000	Clay	Paula Ormaechea	7–5, 6–3

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Doubles: 11 (6 titles, 5 runner–ups)

More information Result, W–L ...

Result	W–L	Date	Tournament	Tier	Surface	Partner	Opponents	Score
Win	1–0	Sep 2013	ITF Sanya, China	50,000	Hard	Sun Ziyue	Yang Zhaoxuan Zhao Yijing	6–7(5–7), 6–3, [10–3]
Loss	1–1	Mar 2014	Blossom Cup, China	50,000	Hard	Sun Ziyue	Chan Chin-wei Xu Yifan	6–7(4–7), 1–6
Win	2–1	Sep 2015	Zhuhai Open, China	50,000	Hard	You Xiaodi	Irina Khromacheva Emily Webley-Smith	3–6, 6–2, [10–4]
Loss	2–2	May 2016	Kurume Cup, Japan	50,000	Grass	Dalma Gálfi	Hsu Ching-wen Ksenia Lykina	6–7(5–7), 2–6
Win	3–2	Jun 2016	Internazionale di Roma, Italy	50,000	Clay	İpek Soylu	Réka Luca Jani Sofia Shapatava	7–5, 6–1
Win	4–2	Mar 2018	ITF Xiamen, China	15,000	Hard	Sarah-Rebecca Sekulic	Sun Xuliu Sun Ziyue	6–1, 7–5
Loss	4–3	Apr 2018	ITF Pula, Italy	25,000	Clay	Marie Benoît	Naiktha Bains Chiara Scholl	4–6, 5–7
Loss	4–4	Jun 2018	ITF Sumter, United States	25,000	Hard	Julia Elbaba	Astra Sharma Luisa Stefani	6–2, 3–6, [5–10]
Win	5–4	Sep 2018	ITF Cairns, Australia	25,000	Hard	Naikhta Bains	Erin Routliffe Astra Sharma	6–1, 7–6(9–7)
Loss	5–5	Oct 2018	ITF Brisbane, Australia	25,000	Hard	Rutuja Bhosale	Maddison Inglis Kaylah McPhee	5–7, 4–6
Win	6–5	Jul 2019	Open Denain, France	25,000	Clay	Daria Mishina	Bárbara Gatica Rebeca Pereira	6–0, 7–5

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