Stadium: Centre Court Round: 25 Ground: Clay
| Challenger Gran Canaria | 2021/03/02 16:00 | Esteve Lobato, Eduard v Garcia-Lopez, Guillermo | 7-6,6-2 |
| Challenger Gran Canaria | 2021/02/23 17:20 | Andrea Pellegrino v Garcia-Lopez, Guillermo | 6-4,6-3 |
| Open d'Australie | 2021/01/10 11:10 | Garcia-Lopez, Guillermo v Francisco Cerundolo | 2-6,4-6 |
| Alicante, Spain | 2020/10/14 10:45 | Pedro Martinez v Garcia-Lopez, Guillermo | 6-4,6-0 |
| Alicante, Spain | 2020/10/12 10:25 | Brandon Nakashima v Garcia-Lopez, Guillermo | 4-6,3-6 |
| Challenger Biella | 2020/09/29 11:30 | Garcia-Lopez, Guillermo v Juan Pablo Ficovich | 3-6,2-6 |
| Open de France | 2020/09/21 14:05 | Garcia-Lopez, Guillermo v Kimmer Coppejans | 6-0,5-7,3-6 |
| Spanish Summer League | 2020/08/02 08:30 | Ilya Ivashka v Garcia-Lopez, Guillermo | 2-6,4-6 |
| Orlando, USA | 2021/06/11 17:20 | Ulises Blanch v Riffice, Sam | 1-6,5-7 |
| Orlando, USA | 2021/06/09 16:00 | Thai-Son Kwiatkowski v Ulises Blanch | 6-7,6-3,2-6 |
| Orlando, USA | 2021/06/07 18:40 | Ulises Blanch v King, Kevin | 6-4,6-4 |
| Challenger - Little Rock | 2021/06/04 18:25 | Ulises Blanch v Emilio Gomez | 2-6,0-6 |
| Challenger - Little Rock | 2021/06/03 19:15 | Christopher Eubanks v Ulises Blanch | 4-6,6-7 |
| Challenger - Little Rock | 2021/06/02 15:00 | Ulises Blanch v Zachary Svajda | 5-7,6-3,6-3 |
| ATP Parma | 2021/05/22 10:00 | Ulises Blanch v Benjamin Bonzi | 3-6,5-7 |
| Challenger Biella | 2021/05/19 11:40 | Thai-Son Kwiatkowski v Ulises Blanch | 6-4,7-6 |