| Hua Hin, Singles W-WITF-THA-07A | 06/05 04:10 | 25 | Monica Robinson v Lertpitaksinchai, Nicha | 6-4,7-5 | |
| Hua Hin, Singles W-WITF-THA-07A | 05/28 05:30 | 25 | Lertpitaksinchai, Nicha v Karman Kaur Thandi | 3-6,0-6 | |
| ITF Women Incheon Qual | 05/13 03:30 | 62 | Eunhye Lee v Lertpitaksinchai, Nicha | 7-6,3-6,6-3 | |
| ITF Women Goyang Qual | 05/07 01:30 | 44 | Lertpitaksinchai, Nicha v Eunhye Lee | 3-6,2-6 | |
| ITF Women Osaka | 04/12 01:00 | 26 | [285] Lertpitaksinchai, Nicha v Xinyu Wang [435] | 3-6,4-6 | |
| ITF Women Osaka | 04/10 05:45 | 25 | Saito, Yuna v Lertpitaksinchai, Nicha | 2-6,0-6 | |
| ITF Women Osaka Qual | 04/09 01:00 | 62 | [397] Chiang, Yuki Kristina v Lertpitaksinchai, Nicha [277] | 1-6,3-6 | |
| ITF Women Osaka Qual | 04/08 03:30 | 62 | Hasegawa, Mami v Lertpitaksinchai, Nicha | 6-2,6-7,4-6 | |
| ITF Women Osaka Qual | 04/07 04:00 | 62 | Morimoto, Nagisa v Lertpitaksinchai, Nicha | 0-6,3-6 | |
| ITF Women Kashiwa Qual | 04/01 00:30 | 54 | Lertpitaksinchai, Nicha v Tere-Apisah, Abigail | 3-6,2-6 | |
| Gwalior, Singles W-WITF-IND-02A | 03/12 06:25 | 25 | Monica Robinson v Lertpitaksinchai, Nicha | 6-4,6-7,6-2 | |
| Fed Cup, Groupe Mondial | 02/09 05:15 | 1 | Lertpitaksinchai, Nicha v Jeong, Sunam | 7-6,2-6,0-6 | |
| ITF Women Toyota Qual | 11/13 06:05 | 54 | [387] Kyoka Okamura v Lertpitaksinchai, Nicha [317] | 7-6,6-2 | |
| ITF Women Toyota Qual | 11/12 10:10 | 54 | Miyamoto, Ayumi v Lertpitaksinchai, Nicha | 2-6,6-4,2-6 | |
| ITF Women Toyota Qual | 11/12 04:20 | 54 | [289] Lertpitaksinchai, Nicha v Chiang, Yuki Kristina [469] | 7-5,6-2 | |
| WTA Hua Hin Qual | 11/05 04:30 | 46 | Lertpitaksinchai, Nicha v Giuliana Olmos | 4-6,4-6 | |
| WTA Hua Hin Qual | 11/04 04:40 | 45 | Dalila Jakupovic v Lertpitaksinchai, Nicha | 7-5,6-7,2-6 | |
| WTA Hong Kong Qual | 10/07 05:55 | 45 | [445] Lertpitaksinchai, Nicha v Namigata, Junri [241] | 2-6,0-6 | |
| WTA Dalian Qual | 09/03 05:25 | 45 | [332] Beatrice Gumulya v Lertpitaksinchai, Nicha [381] | 7-6,6-2 | |
| Nonthaburi, Simples W-WITF-THA-09A | 08/15 07:35 | 25 | Luksika Kumkhum v Lertpitaksinchai, Nicha | 6-4,6-1 | |
| Nonthaburi, Simples W-WITF-THA-09A | 08/09 02:30 | 26 | Lertpitaksinchai, Nicha v Tatachar Venugopal, Dhruthi | 6-4,5-7,4-6 | |
| Nonthaburi, Simples W-WITF-THA-09A | 08/08 02:30 | 25 | Lertpitaksinchai, Nicha v Thasaporn Naklo | 6-1,6-2 | |
| Nonthaburi, Simples W-WITF-THA-09A | 08/01 02:30 | 25 | [312] Lertpitaksinchai, Nicha v Beatrice Gumulya [340] | 6-4,4-6,5-7 | |
| WTA Nanchang Qual | 07/23 09:00 | 46 | [434] Xiaodi You v Lertpitaksinchai, Nicha [320] | 6-1,7-5 | |
| WTA Nanchang Qual | 07/22 09:35 | 45 | [320] Lertpitaksinchai, Nicha v Ayano Shimizu [234] | 6-4,6-2 | |
| ITF Women Tianjin | 07/19 02:00 | 26 | [320] Lertpitaksinchai, Nicha v Lin Zhu [118] | 2-6,3-6 | |
| ITF Women Tianjin | 07/18 02:00 | 25 | Li, Jiakang v Lertpitaksinchai, Nicha | 6-7,1-6 | |
| ITF Women Tokyo | 06/08 01:00 | 26 | [326] Tammi Patterson v Lertpitaksinchai, Nicha [312] | 6-2,6-4 | |
| ITF Women Tokyo | 06/06 01:00 | 25 | Lu, Jiaxi v Lertpitaksinchai, Nicha | 4-6,4-6 | |
| ITF Women Goyang | 05/23 03:15 | 25 | Chihiro Muramatsu v Lertpitaksinchai, Nicha | 6-0,6-3 |