Stadium: Palaagnelli Round: 28 Ground: Hardcourt indoor
| 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 |
| Challenger Milan MD | 2017/06/30 08:30 | Bednarek T / Pel D v Grigelis L / Kolar Z | 6-2,7-5 |
| Challenger Milan MD | 2017/06/26 16:25 | Grigelis L / Kolar Z v de Waard S / Mclachlan B | 6-3,6-3 |
| Challenger Bergamo MD | 2019/02/21 13:00 | Clayton S / Shamasdin A v Draganja T / Siljestrom A | 6-4,6-4 |
| Challenger Bergamo MD | 2019/02/20 10:30 | Clayton S / Shamasdin A v Trusendi W / Viola M | 2-6,6-3,10-8 |
| Challenger Budapest MD | 2019/02/09 13:00 | Clayton S / Shamasdin A v Baldi F / Margaroli L | 4-6,6-7 |
| Challenger Budapest MD | 2019/02/07 16:30 | Janvier M / Vervoort M v Clayton S / Shamasdin A | 1-6,6-7 |
| Challenger Budapest MD | 2019/02/06 20:40 | Miedler, Lucas / Weissborn, Tristan-Samuel v Clayton S / Shamasdin A | 6-3,4-6,7-10 |
| Challenger - Quimper - Doubles Hommes | 2019/01/30 15:20 | Benchetrit E / Blancaneaux G v Clayton S / Shamasdin A | 6-3,6-4 |
| Challenger - Koblenz - Doubles Hommes | 2019/01/17 14:45 | Melzer J / Polasek F v Clayton S / Shamasdin A | 6-2,6-2 |
| Challenger - Koblenz - Doubles Hommes | 2019/01/15 14:55 | Barranco / Branc. v Clayton S / Shamasdin A | 7-6,6-7,10-12 |