Round: 26 Ground: Clay
| Challenger Bergamo MD | 2019/02/23 15:30 | Grigelis L / Kolar Z v Brkic T / Brown D | 7-5,7-6 |
| Challenger Bergamo MD | 2019/02/22 13:25 | Grigelis L / Kolar Z v Clayton S / Shamasdin A | 6-4,6-1 |
| Challenger Bergamo MD | 2019/02/21 18:05 | Grigelis L / Kolar Z v Caruana L / Sinner J | 6-3,6-3 |
| Challenger Bergamo MD | 2019/02/20 14:30 | Pel D / Sancic A v Grigelis L / Kolar Z | 3-6,6-3,4-10 |
| Challenger Andria MD | 2017/11/23 14:00 | Arends S / Gille S v Grigelis L / Kolar Z | 6-4,6-4 |
| Challenger Liberec MD | 2017/08/05 13:45 | Grigelis L / Kolar Z v Bednarek T / Pel D | 6-3,6-4 |
| Challenger Liberec MD | 2017/08/04 15:00 | Clezar G / Ficovich J v Grigelis L / Kolar Z | 4-6,7-6,10-12 |
| Challenger Liberec MD | 2017/07/31 09:00 | Grigelis L / Kolar Z v Jaloviec M / Safranek V | 6-3,6-2 |