Stadium: Court 10 Round: 44 Ground: Hardcourt outdoor
| Challenger Vancouver | 2018/08/14 21:25 | Lloyd Harris v Thai-Son Kwiatkowski | 6-3,6-4 |
| Challenger Vancouver | 2018/08/13 20:35 | Vincent Millot v Thai-Son Kwiatkowski | 4-6,0-6 |
| Challenger Vancouver | 2018/08/12 23:10 | Thai-Son Kwiatkowski v Alexander Ward | 6-2,6-0 |
| Challenger Vancouver | 2018/08/11 18:20 | Thai-Son Kwiatkowski v Henry Craig | 6-4,6-1 |
| ATP Washington | 2018/07/31 20:45 | James Duckworth v Thai-Son Kwiatkowski | 6-3,7-5 |
| ATP Washington Qual | 2018/07/28 15:45 | Thai-Son Kwiatkowski v Illya Marchenko | 7-6,0-6,7-5 |
| Challenger Binghamton Qual | 2018/07/23 14:00 | Mikael Torpegaard v Thai-Son Kwiatkowski | 6-4,7-5 |
| Challenger Binghamton Qual | 2018/07/22 16:30 | Jeffrey John Wolf v Thai-Son Kwiatkowski | 2-6,6-4,3-6 |
| Challenger Portoroz | 2018/08/09 18:00 | Sergiy Stakhovsky v Constant Lestienne | 6-3,2-6,1-6 |
| Challenger Portoroz | 2018/08/08 17:20 | Sergiy Stakhovsky v Altug Celikbilek | 7-6,6-2 |
| Challenger Portoroz | 2018/08/07 20:05 | Sergiy Stakhovsky v Christopher Heyman | 4-6,6-3,6-3 |
| Challenger Segovia | 2018/07/31 14:10 | Sergiy Stakhovsky v Matteo Viola | 3-6,6-2,6-7 |
| ATP Newport | 2018/07/17 15:00 | Sergiy Stakhovsky v Jason Jung | 4-6,6-3,3-6 |
| Wimbledon | 2018/07/04 12:10 | Sam Querrey v Sergiy Stakhovsky | 7-6,6-3,6-3 |
| Wimbledon | 2018/07/02 10:30 | Sergiy Stakhovsky v Joao Sousa | 6-3,6-3,5-7,1-6,6-4 |
| Boodles Challenge | 2018/06/30 13:30 | Andreas Seppi v Sergiy Stakhovsky | 3-6,3-6 |