Stadium: Court 2 Round: 46 Ground: Hardcourt outdoor
| ITF USA F20 | 2016/06/22 20:20 | Pavel Krainik v Thai-Son Kwiatkowski | 2-6,3-6 |
| Challenger Las Vegas | 2018/10/20 17:00 | Pavel Krainik v Jordan Sauer | 6-1,6-3 |
| Challenger Calgary | 2018/10/16 00:00 | Pavel Krainik v Filip Peliwo | 4-6,6-3,3-6 |
| Challenger Monterrey | 2018/10/02 18:00 | Pavel Krainik v Santiago Giraldo | 4-6,4-6 |
| Challenger Monterrey | 2018/10/01 18:20 | Emilio Nava v Pavel Krainik | 5-7,6-3,3-6 |
| Challenger Monterrey | 2018/09/30 17:30 | Pavel Krainik v Cristian Rodriguez | 7-6,6-4 |
| Challenger Monterrey | 2018/09/29 19:05 | Luis Patino v Pavel Krainik | 3-6,4-6 |
| ITF Canada F7 | 2018/09/11 16:05 | Pavel Krainik v Jack Findel-Hawkins | 6-7,6-2,3-6 |
| ITF Canada F6 | 2018/09/07 18:10 | Alafia Ayeni v Pavel Krainik | 6-4,6-4 |
| Challenger Las Vegas | 2018/10/20 17:00 | Daniel Nguyen v Thai-Son Kwiatkowski | 2-6,3-6 |
| Challenger Fairfield | 2018/10/07 18:15 | Thai-Son Kwiatkowski v Frederik Nielsen | 7-6,3-6,5-7 |
| Challenger Fairfield | 2018/10/06 22:15 | Marcos Giron v Thai-Son Kwiatkowski | 6-4,2-6,4-6 |
| Challenger Stockton | 2018/10/03 20:00 | Lloyd Harris v Thai-Son Kwiatkowski | 6-2,6-4 |
| Challenger Stockton | 2018/10/01 18:35 | Thai-Son Kwiatkowski v Lucas Miedler | 3-6,7-6,6-4 |
| Challenger Columbus | 2018/09/21 16:45 | Mikael Torpegaard v Thai-Son Kwiatkowski | 6-4,6-2 |
| Challenger Columbus | 2018/09/19 19:35 | Thai-Son Kwiatkowski v Peter Polansky | 7-6,2-6,7-6 |
| Challenger Columbus | 2018/09/18 16:45 | Vincent Millot v Thai-Son Kwiatkowski | 2-6,4-6 |