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