| Open d'Australie - Femmes | 01/10 05:10 | 14 | [155] Elisabetta Cocciaretto v Arruabarrena, L. [228] | 6-0,7-5 | |
| WTA Luxembourg | 09/11 11:40 | 14 | [234] Anastasia Zakharova v Arruabarrena, L. [185] | 6-4,6-3 | |
| US Open Women | 08/26 17:45 | 15 | [185] Arruabarrena, L. v Rebeka Masarova [231] | 5-7,1-6 | |
| US Open Women | 08/24 21:40 | 14 | [123] Magdalena Frech v Arruabarrena, L. [185] | 6-3,4-6,3-6 | |
| WTA - Cluj-Napoca | 08/05 12:50 | 26 | [198] Arruabarrena, L. v Buzarnescu, Mihaela [170] | 3-6,5-7 | |
| WTA - Cluj-Napoca | 08/02 09:55 | 25 | Tiron, Evelyne Christelle Atticia v Arruabarrena, L. | 0-6,0-6 | |
| ITF W60 Versmold | 07/29 15:10 | 26 | [358] Ferrando, Cristiana v Arruabarrena, L. [198] | 6-1,6-2 | |
| ITF W60 Versmold | 07/27 15:50 | 25 | Schunk, Nastasja Mariana v Arruabarrena, L. | 3-6,2-6 | |
| WTA Palermo | 07/19 14:00 | 25 | [192] Arruabarrena, L. v Grace Min [166] | 3-6,4-6 | |
| WTA Budapest | 07/10 08:00 | 14 | [178] Arruabarrena, L. v Victoria Duval [447] | 2-6,2-6 | |
| WTA Bastad | 07/07 10:20 | 26 | [60] Rebecca Peterson v Arruabarrena, L. [178] | 6-1,6-1 | |
| WTA Bastad | 07/06 13:55 | 25 | [178] Arruabarrena, L. v Gatto-Monticone, Giulia [173] | 6-2,6-3 | |
| Wimbledon Women | 06/22 17:25 | 14 | [178] Arruabarrena, L. v Jana Fett [201] | 6-7,5-7 | |
| WTA Bol | 06/07 10:40 | 19 | [192] Arruabarrena, L. v Cadantu, Alexandra [317] | 0-6,5-7 | |
| French Open Women | 05/31 15:25 | 23 | [192] Arruabarrena, L. v Varvara Gracheva [88] | 2-6,3-6 | |
| French Open Women | 05/28 11:40 | 19 | [191] Arruabarrena, L. v Carol Zhao [324] | 6-4,6-2 | |
| French Open Women | 05/26 13:00 | 15 | [249] Lottner, Antonia v Arruabarrena, L. [191] | 7-6,2-6,4-6 | |
| French Open Women | 05/25 08:30 | 14 | [167] Usue Maitane Arconada v Arruabarrena, L. [191] | 6-7,2-6 | |
| ITF W60 La Bisbal | 05/13 07:55 | 26 | [421] Irina Khromacheva v Arruabarrena, L. [197] | 1-6,6-3,6-3 | |
| ITF W60 La Bisbal | 05/11 10:40 | 25 | [197] Arruabarrena, L. v Kaja Juvan [101] | 6-1,3-6,6-4 | |
| WTA Istanbul | 04/20 10:30 | 25 | [17] Elise Mertens v Arruabarrena, L. [181] | 6-2,6-0 | |
| WTA Istanbul | 04/18 09:00 | 19 | [158] Harmony Tan v Arruabarrena, L. [180] | 3-6,3-6 | |
| WTA Istanbul | 04/17 08:00 | 14 | [345] Berfu Cengiz v Arruabarrena, L. [180] | 5-7,3-6 | |
| WTA - Bogota | 04/09 21:35 | 27 | [190] Harmony Tan v Arruabarrena, L. [167] | 6-1,6-4 | |
| WTA - Bogota | 04/07 15:00 | 26 | [167] Arruabarrena, L. v Jasmine Paolini [103] | 2-6,6-4,6-2 | |
| WTA - Bogota | 04/06 19:15 | 25 | Arruabarrena, L. v Plazas, Jessica | 6-0,6-1 | |
| WTA - Bogota | 04/04 18:00 | 19 | Arruabarrena, L. v Yuliana Monroy | 6-0,6-0 | |
| WTA - Bogota | 04/03 18:50 | 45 | [170] Arruabarrena, L. v Carol Zhao [428] | 6-0,6-0 | |
| WTA Monterrey | 03/14 19:00 | 19 | [168] Arruabarrena, L. v Anna Kalinskaya [126] | 4-6,3-6 | |
| WTA Monterrey | 03/13 21:25 | 14 | [168] Arruabarrena, L. v Elisabetta Cocciaretto [134] | 6-2,6-4 |