Stadium: Court 9 Round: 15 Ground: Clay
| French Open Women | 2021/05/25 08:30 | Anna Kalinskaya v Antonia Lottner | 5-7,4-6 |
| WTA Stuttgart | 2021/04/17 17:35 | Ulrikke Eikeri v Antonia Lottner | 3-6,6-3,6-3 |
| ITF W60 Bellinzona | 2021/04/07 13:10 | Antonia Lottner v Simona Waltert | 6-3,6-7,4-6 |
| Australian Open Women | 2021/01/12 12:35 | Ysaline Bonaventure v Antonia Lottner | 6-1,6-3 |
| Australian Open Women | 2021/01/10 12:55 | Antonia Lottner v Elitsa Kostova | 6-4,7-5 |
| French Open Women | 2020/09/23 08:00 | Daniela Seguel v Antonia Lottner | 7-5,6-2 |
| WTA Lyon | 2020/03/02 14:15 | Antonia Lottner v Alize Cornet | 5-7,0-6 |
| WTA Lyon | 2020/03/01 10:00 | Antonia Lottner v Cristina Bucsa | 2-6,6-3,7-6 |
| French Open Women | 2021/05/25 08:30 | Usue Maitane Arconada v Lara Arruabarrena | 6-7,2-6 |
| ITF W60 La Bisbal | 2021/05/13 07:55 | Irina Khromacheva v Lara Arruabarrena | 1-6,6-3,6-3 |
| ITF W60 La Bisbal | 2021/05/11 10:40 | Lara Arruabarrena v Kaja Juvan | 6-1,3-6,6-4 |
| WTA Istanbul | 2021/04/20 10:30 | Elise Mertens v Lara Arruabarrena | 6-2,6-0 |
| WTA Istanbul | 2021/04/18 09:00 | Harmony Tan v Lara Arruabarrena | 3-6,3-6 |
| WTA Istanbul | 2021/04/17 08:00 | Berfu Cengiz v Lara Arruabarrena | 5-7,3-6 |
| WTA Bogota | 2021/04/09 21:35 | Harmony Tan v Lara Arruabarrena | 6-1,6-4 |
| WTA Bogota | 2021/04/07 15:00 | Lara Arruabarrena v Jasmine Paolini | 2-6,6-4,6-2 |