Stadium: Court 1 Round: 25
| ITF Women Stellenbosch | 2018/11/25 07:00 | Stegmann, Sari v Geiss, Janina | 6-0,6-1 |
| Sharm El Sheikh, Singles W-WITF-EGY-09A | 2018/02/17 12:00 | Dmitrichenko, Yekaterina v Geiss, Janina | 6-2,6-1 |
| Sharm El Sheikh, Singles W-WITF-EGY-09A | 2018/02/10 08:00 | Geiss, Janina v Ashmitha Easwaramurthi | 3-6,2-6 |
| Cairo, Singles W-WITF-EGY-02A | 2017/12/13 11:55 | Geiss, Janina v Lamis Alhussein Abdel Aziz | 3-6,1-6 |
| Cairo, Singles W-WITF-EGY-02A | 2017/12/03 09:00 | Koplova, Tereza v Geiss, Janina | 6-2,6-3 |
| Sharm El Sheikh, Singles W-WITF-EGY-09A | 2017/11/19 15:30 | Guidetti, Giulia v Geiss, Janina | 6-4,6-3 |
| Dakar, Singles W-WITF-SEN-01A | 2017/11/15 11:30 | Katie Swan v Geiss, Janina | 6-0,6-0 |
| ITF Women Dakar Qual | 2017/11/11 16:35 | Skachkova, Katsiaryna v Geiss, Janina | 4-6,6-0,2-6 |
| Hua Hin, Singles W-WITF-THA-07A | 2018/12/01 03:00 | Pang, Sarah v Jongma, Arisara | 5-7,1-6 |
| Hua Hin, Singles W-WITF-THA-07A | 2018/11/24 03:00 | Jang, Eun SE v Pang, Sarah | 6-0,6-1 |
| Nonthaburi, Simples W-WITF-THA-09A | 2018/11/11 02:00 | Pang, Sarah v Pappa, Vanesa | 0-6,1-6 |
| Nonthaburi, Simples W-WITF-THA-09A | 2018/11/03 02:00 | Pang, Sarah v Min Liu | 3-6,0-6 |
| ITF Women Anning Qual | 2018/09/16 03:00 | Pang, Sarah v Dong, Hongding | 0-6,2-6 |
| ITF Women Anning | 2018/09/11 02:00 | Pang, Sarah v Zhao, Qianqian | 1-6,1-6 |
| ITF Women Anning | 2018/09/08 03:00 | Pang, Sarah v Zhao, Qianqian | 4-6,2-6 |
| Nonthaburi, Simples W-WITF-THA-09A | 2018/09/01 05:00 | Pang, Sarah v Runglerdkriangkrai, Apichaya | 3-6,0-6 |