| Open da Austrália - Feminino | 01/18 01:30 | 46 | [102] Nao Hibino v Lara Arruabarrena [152] | 6-1,6-2 | |
| Open da Austrália - Feminino | 01/16 23:00 | 45 | [152] Lara Arruabarrena v Yuki Naito [188] | 6-3,6-4 | |
| Open da Austrália - Feminino | 01/15 23:00 | 44 | [207] Indy De Vroome v Lara Arruabarrena [152] | 3-6,3-6 | |
| WTA - Auckland | 01/04 04:55 | 45 | [155] Lara Arruabarrena-Vecino v Greet Minnen [110] | 3-6,4-6 | |
| ITF - W25 Riba-roja de Túria | 10/12 09:00 | 28 | [165] Lara Arruabarrena v Andrea Lazaro Garcia [441] | 6-4,3-6,2-6 | |
| ITF - W25 Riba-roja de Túria | 10/11 08:30 | 27 | [249] Eva Guerrero Alvarez v Lara Arruabarrena [165] | 6-4,4-6,4-6 | |
| ITF - W25 Riba-roja de Túria | 10/10 11:30 | 26 | [335] Olga Saez Larra v Lara Arruabarrena [165] | 4-6,3-6 | |
| ITF - W25 Riba-roja de Túria | 10/08 11:40 | 25 | [350] Irene Burillo Escorihuela v Lara Arruabarrena [165] | 1-6,2-6 | |
| WTA Seoul | 09/15 05:00 | 64 | [142] Ana Bogdan v Lara Arruabarrena [177] | 6-3,6-2 | |
| WTA Seoul | 09/14 04:30 | 45 | [253] Naiktha Bains v Lara Arruabarrena [177] | 0-6,3-6 | |
| WTA - Nanchang | 09/11 08:15 | 26 | [177] Lara Arruabarrena v Viktorija Golubic [76] | 6-1,0-6,3-6 | |
| WTA - Nanchang | 09/09 07:00 | 25 | [105] Monica Niculescu v Lara Arruabarrena [155] | Retired | |
| WTA - New Haven | 09/04 18:05 | 25 | [118] Varvara Lepchenko v Lara Arruabarrena [155] | 6-1,4-6,6-4 | |
| WTA - New Haven | 09/03 17:15 | 24 | [155] Lara Arruabarrena v Eri Hozumi [438] | 7-6,6-0 | |
| Open dos EUA - Feminino | 08/22 18:05 | 45 | [157] Lara Arruabarrena v Timea Babos [112] | 4-6,1-6 | |
| Open dos EUA - Feminino | 08/20 20:10 | 44 | [157] Lara Arruabarrena v Katherine Sebov [200] | 6-1,6-2 | |
| WTA - Karlsruhe | 07/30 15:10 | 25 | [152] Lara Arruabarrena v Paula Badosa [101] | 3-6,4-6 | |
| WTA - Palermo | 07/22 14:00 | 25 | [152] Lara Arruabarrena v Tamara Zidansek [56] | 2-6,3-6 | |
| WTA - Bucareste | 07/17 14:10 | 26 | [165] Lara Arruabarrena v Laura Siegemund [77] | 5-7,3-6 | |
| WTA - Bucareste | 07/16 12:55 | 25 | [221] Shilin Xu v Lara Arruabarrena [165] | 5-7,7-6,5-7 | |
| WTA - Bastad | 07/09 09:00 | 25 | [197] Tereza Mrdeza v Lara Arruabarrena [137] | 6-2,2-6,6-3 | |
| WTA - Madrid | 05/05 11:05 | 24 | [110] Lara Arruabarrena v Sara Sorribes Tormo [75] | 4-6,6-3,1-6 | |
| WTA - Rabat | 05/01 10:00 | 26 | [110] Lara Arruabarrena v Su-Wei Hsieh [24] | 6-4,5-7,3-6 | |
| WTA - Rabat | 04/30 12:00 | 25 | [82] Vera Zvonareva v Lara Arruabarrena [110] | 6-7,5-7 | |
| WTA - Istambul | 04/26 11:45 | 27 | [117] Lara Arruabarrena v Marketa Vondrousova [46] | 1-6,2-6 | |
| WTA - Istambul | 04/24 12:15 | 26 | [117] Lara Arruabarrena v Rebecca Peterson [65] | 6-3,6-2 | |
| WTA - Istambul | 04/23 12:15 | 25 | [27] Carla Suarez Navarro v Lara Arruabarrena [117] | 4-6,5-7 | |
| WTA - Bogotá | 04/13 18:50 | 28 | [106] Lara Arruabarrena v Astra Sharma [138] | 5-7,1-6 | |
| WTA - Bogotá | 04/12 16:00 | 27 | [67] Tamara Zidansek v Lara Arruabarrena [106] | 4-6,2-6 | |
| WTA - Bogotá | 04/11 17:15 | 26 | [187] Jasmine Paolini v Lara Arruabarrena [106] | 6-7,1-6 |