| WTA - Hua Hin | 11/09 08:00 | 26 | [95] Duan, Ying-Ying v Wongteanchai, Varatchaya [336] | 3-6,6-4,6-4 | |
| WTA - Hua Hin | 11/07 10:45 | 25 | [95] Duan, Ying-Ying v Emina Bektas [258] | 6-1,6-1 | |
| Tianjin, Chine | 10/12 04:00 | 26 | [93] Duan, Ying-Ying v Aryna Sabalenka [102] | 3-6,3-6 | |
| Tianjin, Chine | 10/11 04:00 | 25 | [47] Lesia Tsurenko v Duan, Ying-Ying [93] | 4-6,6-7 | |
| Pékin, Chine | 10/03 04:30 | 25 | [20] Vesnina, Elena v Duan, Ying-Ying [99] | 6-3,6-2 | |
| Pékin, Chine | 09/30 14:55 | 24 | [96] Duan, Ying-Ying v Kristina Mladenovic [15] | 7-5,6-4 | |
| Wuhan, China | 09/24 11:30 | 24 | [19] Vesnina, Elena v Duan, Ying-Ying [97] | 6-3,6-4 | |
| WTA Tokyo Qual | 09/18 02:00 | 54 | Cepelova, Jana v Duan, Ying-Ying | 7-5,7-6 | |
| WTA Tokyo Qual | 09/17 04:15 | 46 | [324] Osaka, Mari v Duan, Ying-Ying [97] | 5-7,4-6 | |
| WTA Tokyo Qual | 09/16 02:15 | 45 | [190] Magdalena Frech v Duan, Ying-Ying [97] | 5-7,6-3,2-6 | |
| WTA Tokyo | 09/13 06:20 | 25 | [52] Yulia Putintseva v Duan, Ying-Ying [97] | 6-4,4-6,6-4 | |
| WTA Dalian | 09/08 04:00 | 27 | [92] Duan, Ying-Ying v Kozlova, Kateryna [118] | 2-6,1-6 | |
| WTA Dalian | 09/07 05:45 | 26 | [92] Duan, Ying-Ying v Fangzhou Liu [162] | 5-7,7-6,6-4 | |
| WTA Dalian | 09/06 04:00 | 25 | [92] Duan, Ying-Ying v Beatrice Gumulya [332] | 6-3,6-2 | |
| US Open Women | 08/31 01:55 | 24 | [92] Duan, Ying-Ying v Muguruza, Garbine [3] | 4-6,0-6 | |
| US Open Women | 08/28 17:10 | 23 | [295] Claire Liu v Duan, Ying-Ying [92] | 6-7,6-7 | |
| Nanchang, Chine | 07/25 09:00 | 25 | [64] Duan, Ying-Ying v Arina Rodionova [132] | 5-7,4-6 | |
| Wimbledon Women | 07/03 16:30 | 23 | [62] Duan, Ying-Ying v Ana Bogdan [115] | 4-6,2-6 | |
| WTA Eastbourne | 06/27 10:00 | 25 | [64] Duan, Ying-Ying v Simona Halep [2] | 6-3,3-6,2-6 | |
| WTA Eastbourne | 06/26 10:00 | 24 | [59] Mchale, Christina v Duan, Ying-Ying [64] | Retired | |
| WTA Eastbourne Qual | 06/24 14:00 | 46 | [64] Duan, Ying-Ying v Cepede Royg, Veronica [90] | 7-6,6-2 | |
| WTA Eastbourne Qual | 06/23 10:00 | 45 | [64] Duan, Ying-Ying v Katy Dunne [286] | 6-7,6-4,7-6 | |
| WTA Birmingham | 06/20 13:50 | 25 | [12] Kristina Mladenovic v Duan, Ying-Ying [64] | 6-3,7-6 | |
| Open de France - Femmes | 05/30 15:00 | 23 | [66] Duan, Ying-Ying v Tatjana Maria [102] | 4-6,1-6 | |
| WTA - Strasbourg | 05/21 10:55 | 25 | [64] Duan, Ying-Ying v Stosur, Samantha [25] | 0-6,1-6 | |
| Zhengzhou, Chine | 04/22 05:50 | 28 | [63] Duan, Ying-Ying v Qiang Wang [68] | 6-7,2-6 | |
| Zhengzhou, Chine | 04/21 04:00 | 27 | [154] Su Jeong Jang v Duan, Ying-Ying [63] | 4-6,5-7 | |
| Zhengzhou, Chine | 04/20 04:00 | 26 | [205] Arina Rodionova v Duan, Ying-Ying [63] | 6-4,4-6,6-7 | |
| Zhengzhou, Chine | 04/17 05:55 | 25 | [279] Peangtarn Plipuech v Duan, Ying-Ying [63] | 1-6,1-6 | |
| WTA - Charleston | 04/04 16:00 | 24 | [63] Duan, Ying-Ying v Rodionova, Anastasia [38] | 6-7,1-6 |