| WTA Guadalajara | 03/06 17:00 | 14 | Lauren Davis v Arruabarrena, L. | 4-6,6-4,6-4 | |
| Open d'Australie - Femmes | 01/11 09:05 | 60 | [165] Arruabarrena, L. v Buzarnescu, Mihaela [137] | 4-6,3-6 | |
| ITF W100 Charleston | 11/02 18:25 | 54 | [161] Arruabarrena, L. v Mattek-Sands, Bethanie [343] | 6-2,0-6,4-10 | |
| ITF W80 Tyler | 10/26 18:25 | 54 | [161] Arruabarrena, L. v Jamie Loeb [287] | 4-6,2-6 | |
| ITF W80 Macon | 10/21 18:45 | 25 | [173] Bellis, Catherine v Arruabarrena, L. [160] | 6-3,7-5 | |
| French Open Women | 09/23 08:00 | 14 | [152] Arruabarrena, L. v Jorovic, Ivana [200] | 4-6,3-6 | |
| ITF W60 Saint Malo | 09/09 17:15 | 25 | [177] Cristina Bucsa v Arruabarrena, L. [150] | 4-6,6-3,7-5 | |
| WTA Prague | 09/02 09:25 | 25 | [150] Arruabarrena, L. v Zanevska, Maryna [319] | 3-6,6-2,5-7 | |
| WTA Prague | 09/01 08:00 | 24 | [150] Arruabarrena, L. v Mirjam Bjorklund [331] | 6-0,6-3 | |
| WTA Prague | 08/30 15:40 | 24 | [150] Arruabarrena, L. v Ivakhnenko, Valentyna [242] | 7-5,6-1 | |
| WTA Prague | 08/08 12:45 | 54 | [154] Arruabarrena, L. v Jesika Maleckova [324] | 4-6,6-2,4-6 | |
| WTA Palermo | 08/03 14:00 | 164 | [154] Arruabarrena, L. v Aliaksandra Sasnovich [119] | 5-7,6-7 | |
| WTA Palermo | 08/02 15:30 | 64 | [154] Arruabarrena, L. v Di Giuseppe, Martina [194] | 6-2,6-3 | |
| WTA Palermo | 08/01 17:25 | 54 | [104] Greet Minnen v Arruabarrena, L. [154] | 0-6,6-2,1-6 | |
| Spanish Summer League Women | 07/25 11:45 | - | [83] Sara Sorribes Tormo v Arruabarrena, L. [154] | 6-2,6-3 | |
| Spanish Summer League Women | 07/24 16:30 | - | [154] Arruabarrena, L. v Nuria Parrizas-Diaz [216] | 6-4,6-4 | |
| Spanish Summer League Women | 07/23 17:00 | - | [154] Arruabarrena, L. v Fita Boluda, Angela [489] | 6-4,6-0 | |
| Spanish Summer League Women | 07/18 09:00 | - | [83] Sara Sorribes Tormo v Arruabarrena, L. [154] | 6-3,6-7,6-2 | |
| Spanish Summer League Women | 07/17 14:30 | - | [154] Arruabarrena, L. v Garcia Perez, Georgina [281] | 6-2,6-3 | |
| Spanish Summer League Women | 07/16 15:00 | - | Arruabarrena, L. v Leyre R Gormaz | 7-5,7-5 | |
| Irapuato, Singles W-ITF-MEX-02A | 03/13 02:00 | - | Nadia Podoroska v Arruabarrena, L. | View | |
| Irapuato, Singles W-ITF-MEX-02A | 03/11 22:00 | 26 | [206] Maria Camila Osorio Serrano v Arruabarrena, L. [154] | 6-3,0-6,3-6 | |
| Irapuato, Singles W-ITF-MEX-02A | 03/10 00:30 | 25 | Dalila Jakupovic v Arruabarrena, L. | 6-7,1-6 | |
| WTA Monterrey | 03/02 20:00 | 25 | [84] Yafan Wang v Arruabarrena, L. [159] | 6-4,6-4 | |
| WTA Monterrey | 03/01 22:15 | 64 | [159] Arruabarrena, L. v Caroline Dolehide [131] | 6-4,7-6 | |
| WTA Monterrey | 02/29 18:40 | 45 | [117] Maddison Inglis v Arruabarrena, L. [159] | 2-6,2-6 | |
| Acapulco, Mexico | 02/23 00:35 | 45 | [152] Cepede Royg, Veronica v Arruabarrena, L. [146] | 7-6,3-6,6-1 | |
| Cairo, Singles Qualifying W-ITF-EGY-06A | 02/14 10:00 | 27 | [129] Lesia Tsurenko v Arruabarrena, L. [150] | 7-6,6-2 | |
| Cairo, Singles Qualifying W-ITF-EGY-06A | 02/13 12:10 | 26 | [174] Cagla Buyukakcay v Arruabarrena, L. [150] | 5-7,2-6 | |
| Cairo, Singles Qualifying W-ITF-EGY-06A | 02/12 10:00 | 25 | [215] Hogenkamp, Richel v Arruabarrena, L. [150] | 2-6,7-5,2-6 |