| Singles | |
|---|---|
| 2018 Suzhou Ladies Open | |
| Champion |  Zheng Saisai |
| Runner-up |  Jana Čepelová |
| Final score | 7–5, 6–1 |
Sara Errani was the defending champion, but was unable to participate due to a doping suspension.
Zheng Saisai won the title, defeating Jana Čepelová in the final, 7–5, 6–1.
Zheng Saisai (champion) Wang Yafan (second round)
Zarina Diyas (withdrew)
Katie Boulter (quarterfinals, retired)
Luksika Kumkhum (second round) Zhu Lin (second round)
Anhelina Kalinina (semifinals)
Veronika Kudermetova (first round, retired)| Semifinals | Final | ||||||||||||
| 1 | Zheng Saisai | 6 | 3 | ||||||||||
 Viktoriya Tomova | 4 | 3r | |||||||||||
| 1 | Zheng Saisai | 7 | 6 | ||||||||||
| Q | Jana Čepelová | 5 | 1 | ||||||||||
| Q | Jana Čepelová | 65 | 6 | 77 | |||||||||
| 7 | Anhelina Kalinina | 77 | 1 | 62 | |||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | S Zheng | 6 | 6 | ||||||||||||||||||||||||
| WC | Yi Yuan | 0 | 1 | 1 | S Zheng | 6 | 6 | ||||||||||||||||||||
| Y Duan | 6 | 6 | Y Duan | 2 | 4 | ||||||||||||||||||||||
 C Zhao | 3 | 1 | 1 | S Zheng | 6 | 6 | |||||||||||||||||||||
 Ar Rodionova | 6 | 6 | Ar Rodionova | 2 | 1 | ||||||||||||||||||||||
| WC | Z Yang | 3 | 2 | Ar Rodionova | 6 | 6 | |||||||||||||||||||||
 K Thandi | 0 | 0 | 6 | L Zhu | 2 | 4 | |||||||||||||||||||||
| 6 | L Zhu | 6 | 6 | 1 | S Zheng | 6 | 3 | ||||||||||||||||||||
| 4 | K Boulter | 6 | 6 | V Tomova | 4 | 3r | |||||||||||||||||||||
 M Doi | 4 | 2 | 4 | K Boulter | 6 | 6 | |||||||||||||||||||||
| Jia Lu | 6 | 6 | Jia Lu | 2 | 2 | ||||||||||||||||||||||
| LL | X Jiang | 1 | 0 | 4 | K Boulter | 4 | 0r | ||||||||||||||||||||
| K Swan | 6 | 7 | V Tomova | 6 | 0 | ||||||||||||||||||||||
| WC | J Ren | 4 | 5 | K Swan | 3 | 77 | 3 | ||||||||||||||||||||
| V Tomova | 6 | 3 | V Tomova | 6 | 64 | 6 | |||||||||||||||||||||
| 8 | V Kudermetova | 4 | 0r | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 5 | L Kumkhum | 4 | 6 | 6 | |||||||||||||||||||||||
| Q |  F Al-Nabhani | 6 | 2 | 4 | 5 | L Kumkhum | 3 | 3 | |||||||||||||||||||
| A Raina | 1 | 2 | Q | J Čepelová | 6 | 6 | |||||||||||||||||||||
| Q | J Čepelová | 6 | 6 | Q | J Čepelová | 4 | 7 | 6 | |||||||||||||||||||
| N Hibino | 66 | 6 | 6 | N Hibino | 6 | 5 | 3 | ||||||||||||||||||||
 B Krejčíková | 78 | 3 | 4 | N Hibino | 77 | 6 | |||||||||||||||||||||
| F Liu | 2 | 0 | Q | P Plipuech | 61 | 4 | |||||||||||||||||||||
| Q | P Plipuech | 6 | 6 | Q | J Čepelová | 65 | 6 | 77 | |||||||||||||||||||
| 7 | A Kalinina | 77 | 6 | 7 | A Kalinina | 77 | 1 | 62 | |||||||||||||||||||
| F Xun | 62 | 0 | 7 | A Kalinina | 6 | 6 | |||||||||||||||||||||
| LL | H Kaji | 3 | 6 | 6 | LL | H Kaji | 1 | 0 | |||||||||||||||||||
 J Glushko | 6 | 4 | 3 | 7 | A Kalinina | 66 | 6 | 0 | |||||||||||||||||||
| WC | K Zhang | 6 | 2 | 5 | X Han | 78 | 1 | 0r | |||||||||||||||||||
| X Han | 1 | 6 | 7 | X Han | 6 | 64 | 6 | ||||||||||||||||||||
| Q | G Dabrowski | 2 | 3 | 2 | Y Wang | 3 | 77 | 4 | |||||||||||||||||||
| 2 | Y Wang | 6 | 6 | ||||||||||||||||||||||||
Ksenia Pervak was the defending champion, but did not compete in the juniors this year.
Serena Williams was the defending champion, and successfully defended her title, defeating lucky loser Coco Vandeweghe in the final, 7–5, 6–3. It was the first all-American final on the WTA Tour since the 2009 WTA Tour Championships, and the first on American soil since Los Angeles in 2004.
Wang Qiang was the defending champion, having won the event in 2012, but lost in the first round to Wang Yafan.
This tournament was a new addition to the ITF Women's Circuit.
Zheng Saisai was the defending champion, and successfully defended her title, defeating Han Xinyun in the all-Chinese final, 6–4, 3–6, 6–4.
This was a new event to the WTA 125K series.
Alla Kudryavtseva and Anastasia Rodionova were the defending champions, but chose not to participate.
Lyudmyla Kichenok and Nadiia Kichenok were the defending champions, but chose to participate in Auckland instead.
Vania King and Monica Niculescu won the title, defeating Xu Yifan and Zheng Saisai in the final, 6–1, 6–4.
Simona Halep was the defending champion, but lost to Ana Ivanovic in the second round.
Sara Errani was the defending champion, but withdrew before the tournament due to an adductor problem.
Wang Qiang was the defending champion, but chose not to participate.
Zheng Saisai won the title, defeating Liu Fangzhou 6–2, 6–3 in the final.
Zhang Kailin was the defending champion, but lost in the first round to Xun Fangying.
Simona Halep was the defending champion and successfully defended her title, defeating Kristina Mladenovic in the final, 7–5, 6–7(5–7), 6–2.
Zheng Saisai was the defending champion, and successfully defended her title, defeating Liu Fangzhou in the final, 6–3, 6–1.
Donna Vekić was the defending champion, but lost in the semifinals to Johanna Konta in a rematch of the previous year's final.
Peng Shuai was the defending champion, but withdrew before the tournament began.
Irina Khromacheva was the defending champion, but retired in the first round against Yang Zhaoxuan.
Duan Yingying and Wang Yafan were the defending champions, but Wang chose to compete in Nanchang instead. Duan played alongside Zheng Saisai, but lost in the first round to Lesley Pattinama Kerkhove and Bibiane Schoofs.
Hsieh Su-wei and Barbora Strýcová were the defending champions and successfully defended their title, defeating Barbora Krejčíková and Zheng Saisai in the final, 7–5, 3–6, [10–5].
Zheng Saisai was the reigning champion but chose not to participate.