Stadium: Stadium Court Ground: Hardcourt indoor
| ATP Cincinnati Qual | 2018/08/12 14:00 | Bradley Klahn v Guillermo Garcia-Lopez | 7-6,7-6 |
| ATP Miami | 2014/03/20 18:40 | Bradley Klahn v Guillermo Garcia-Lopez | 6-1,1-6,4-6 |
| Challenger Bratislava | 2018/11/07 11:20 | Guillermo Garcia-Lopez v Sebastian Ofner | 5-7,4-6 |
| Challenger Bratislava | 2018/11/05 15:30 | Guillermo Garcia-Lopez v Daniel Brands | 7-6,6-4 |
| Challenger Eckental | 2018/10/31 13:45 | Gleb Sakharov v Guillermo Garcia-Lopez | 6-4,7-6 |
| Challenger Eckental | 2018/10/29 14:40 | Quentin Halys v Guillermo Garcia-Lopez | 6-7,6-7 |
| ATP Basel | 2018/10/20 15:15 | Guillermo Garcia-Lopez v Vasek Pospisil | 2-6,2-6 |
| ATP Stockholm | 2018/10/15 13:30 | Denis Kudla v Guillermo Garcia-Lopez | 6-2,7-5 |
| ATP St Petersburg | 2018/09/18 11:45 | Guillermo Garcia-Lopez v Matteo Berrettini | 6-7,6-2,3-6 |
| ATP Winston-Salem | 2018/08/21 00:30 | Hyeon Chung v Guillermo Garcia-Lopez | 7-6,6-2 |
| Challenger Houston | 2018/11/19 01:00 | Roy Smith v Bradley Klahn | 6-7,6-7 |
| Challenger Houston | 2018/11/17 17:45 | Dominik Koepfer v Bradley Klahn | 3-6,4-6 |
| Challenger Houston | 2018/11/16 20:45 | Evan Song v Bradley Klahn | 3-6,6-4,1-6 |
| Challenger Houston | 2018/11/15 22:10 | Michael Redlicki v Bradley Klahn | 4-6,4-6 |
| Challenger Houston | 2018/11/13 18:10 | Alexander Sarkissian v Bradley Klahn | 1-6,2-6 |
| Challenger Knoxville | 2018/11/08 16:55 | Evgeny Karlovskiy v Bradley Klahn | 5-7,6-4,6-4 |
| Challenger Knoxville | 2018/11/06 20:50 | JC Aragone v Bradley Klahn | 2-6,6-7 |
| Challenger Charlottesville | 2018/11/03 18:40 | Bradley Klahn v Tommy Paul | 3-6,3-6 |