Stadium: Anne Marie Morault Round: 24 Ground: Hardcourt outdoor
| Montevideo, Uruguay | 2018/11/07 18:40 | Pedro Cachin v Lorenzo Giustino | 1-6,3-6 |
| Montevideo, Uruguay | 2018/11/05 17:00 | Lorenzo Giustino v Bellucci, Thomaz | 6-3,6-3 |
| Challenger Guayaquil | 2018/10/29 18:00 | Londero, Juan Ignacio v Lorenzo Giustino | 6-2,6-4 |
| Challenger - Barcelone | 2018/10/12 09:30 | Pedro Martinez v Lorenzo Giustino | 6-2,7-5 |
| Challenger - Barcelone | 2018/10/11 09:30 | Lorenzo Giustino v Nicola Kuhn | 6-4,4-6,6-1 |
| Challenger - Barcelone | 2018/10/10 10:00 | Samper-Montana, Jordi v Lorenzo Giustino | 4-6,4-6 |
| Florence, Italy | 2018/10/05 13:45 | Andujar, Pablo v Lorenzo Giustino | 6-4,6-7,6-3 |
| Florence, Italy | 2018/10/04 08:30 | Krawietz, Kevin v Lorenzo Giustino | 2-6,4-6 |
| Houston, USA | 2018/11/16 17:50 | Thai-Son Kwiatkowski v Smith, Roy | 6-4,6-7,6-7 |
| Houston, USA | 2018/11/14 18:10 | Lorenzi, Paolo v Thai-Son Kwiatkowski | 4-6,4-6 |
| Houston, USA | 2018/11/13 19:30 | Thai-Son Kwiatkowski v Mitchell Krueger | 7-6,4-6,6-4 |
| Challenger Charlottesville | 2018/11/03 17:00 | Polansky, Peter v Thai-Son Kwiatkowski | 6-2,7-6 |
| Challenger Charlottesville | 2018/11/02 18:25 | Thai-Son Kwiatkowski v Michael Mmoh | 3-6,6-3,6-4 |
| Challenger Charlottesville | 2018/11/01 19:30 | Smyczek, Tim v Thai-Son Kwiatkowski | 2-6,7-5,2-6 |
| Challenger Las Vegas | 2018/10/24 19:40 | Rola, Blaz v Thai-Son Kwiatkowski | 6-3,6-4 |
| Challenger Las Vegas | 2018/10/23 19:35 | Thai-Son Kwiatkowski v Song, Evan | 6-4,6-4 |