| Challenger Tampere | 07/25 09:15 | 25 | Axel Michon v Guillermo Garcia Lopez | 2-6,4-6 | |
| Challenger Scheveningen | 07/23 13:00 | 29 | [163] Guillermo Garcia-Lopez v Ruben Bemelmans [96] | 6-1,6-7,6-2 | |
| Challenger Scheveningen | 07/22 12:10 | 28 | [465] Thiemo De Bakker v Guillermo Garcia-Lopez [163] | Retired | |
| Challenger Scheveningen | 07/21 14:00 | 27 | [336] Botic Van De Zandschulp v Guillermo Garcia-Lopez [163] | 4-6,3-6 | |
| Challenger Scheveningen | 07/20 14:00 | 26 | [179] Maximo Gonzalez v Guillermo Garcia-Lopez [163] | 7-5,3-6,4-6 | |
| Challenger Scheveningen | 07/18 13:35 | 25 | [298] Tallon Griekspoor v Guillermo Garcia-Lopez [163] | 4-6,6-1,2-6 | |
| Challenger Bastad | 07/12 09:00 | 26 | Aleksandr Nedovyesov v Guillermo Garcia Lopez | 6-2,6-4 | |
| Challenger Bastad | 07/10 09:20 | 25 | Fred Simonsson v Guillermo Garcia Lopez | 3-6,2-6 | |
| Challenger Marburg | 07/07 15:30 | 28 | [143] Guillermo Garcia-Lopez v Filip Krajinovic [180] | 5-7,4-6 | |
| Challenger Marburg | 07/06 15:30 | 27 | [143] Guillermo Garcia-Lopez v Joao Pedro Sorgi [299] | 6-4,4-6,6-3 | |
| Challenger Marburg | 07/05 12:30 | 26 | [143] Guillermo Garcia-Lopez v Riccardo Bellotti [229] | 7-5,1-6,6-2 | |
| Challenger Marburg | 07/04 10:00 | 25 | [143] Guillermo Garcia-Lopez v David Pichler [415] | 4-6,7-5,7-6 | |
| French Open | 06/02 10:25 | 25 | [6] Milos Raonic v Guillermo Garcia-Lopez [153] | Retired | |
| French Open | 05/31 11:40 | 24 | Marco Trungelliti v Guillermo Garcia-Lopez | 5-7,4-6,5-7 | |
| French Open | 05/28 09:00 | 23 | [153] Guillermo Garcia-Lopez v Gilles Muller [27] | 7-6,6-7,6-2,6-2 | |
| ATP Madrid | 05/08 10:00 | 24 | [124] Guillermo Garcia-Lopez v Marius Copil [104] | 6-7,6-4,6-7 | |
| ATP Estoril | 05/02 15:10 | 25 | [52] Ryan Harrison v Guillermo Garcia-Lopez [120] | 6-3,2-6,6-2 | |
| ATP Barcelona | 04/24 12:15 | 24 | Guillermo Garcia Lopez v Albert Montanes | 4-6,4-6 | |
| ATP Monte Carlo | 04/17 11:00 | 24 | [56] Adrian Mannarino v Guillermo Garcia-Lopez [100] | 1-6,6-3,6-4 | |
| ATP Monte Carlo Qual | 04/16 11:30 | 46 | [70] Damir Dzumhur v Guillermo Garcia-Lopez [94] | 0-6,6-4,5-7 | |
| ATP Monte Carlo Qual | 04/15 12:30 | 45 | Florent Diep v Guillermo Garcia-Lopez | 3-6,2-6 | |
| ATP Marrakech | 04/12 10:00 | 25 | [37] Paolo Lorenzi v Guillermo Garcia-Lopez [94] | 7-6,7-5 | |
| Challenger Sophia Antipolis | 04/07 14:00 | 27 | [91] Guillermo Garcia-Lopez v Jozef Kovalik [127] | 6-7,7-5,1-6 | |
| Challenger Sophia Antipolis | 04/05 09:30 | 26 | [91] Guillermo Garcia-Lopez v Lukas Rosol [162] | 6-0,5-7,6-3 | |
| Challenger Sophia Antipolis | 04/04 08:30 | 25 | [91] Guillermo Garcia-Lopez v Corentin Moutet [395] | 6-2,7-5 | |
| ATP Indian Wells | 03/11 02:15 | 23 | [89] Guillermo Garcia-Lopez v Guido Pella [145] | 6-4,5-7,2-6 | |
| ATP Dubai | 03/01 15:00 | 26 | [1] Andy Murray v Guillermo Garcia-Lopez [97] | 6-2,6-0 | |
| ATP Dubai | 02/27 11:25 | 25 | [34] Viktor Troicki v Guillermo Garcia-Lopez [97] | 4-6,3-6 | |
| ATP Delray Beach | 02/22 23:00 | 26 | Guillermo Garcia Lopez v Jack Sock | 4-6,1-6 | |
| ATP Delray Beach | 02/21 16:00 | 25 | Dustin Brown v Guillermo Garcia Lopez | 3-6,3-6 |