Stadium: Court 3 Round: 25 Ground: Clay
| Challenger Mallorca | 2018/08/26 07:30 | Gerard Granollers-Pujol v Altug Celikbilek | 4-6,2-6 |
| Challenger Portoroz Qual | 2018/08/04 14:35 | Enzo Couacaud v Gerard Granollers-Pujol | 6-2,7-5 |
| Challenger Binghamton Qual | 2018/07/22 14:45 | Alexander Ritschard v Gerard Granollers-Pujol | 4-6,6-4,7-5 |
| Challenger Binghamton Qual | 2018/07/21 16:15 | Cannon Kingsley v Gerard Granollers-Pujol | 3-6,2-6 |
| Challenger Milan Qual | 2018/06/24 11:15 | Martin Cuevas v Gerard Granollers-Pujol | 6-4,6-3 |
| Challenger Milan Qual | 2018/06/23 10:00 | Gerard Granollers-Pujol v Daniel Dutra Da Silva | 7-6,6-4 |
| Challenger Fergana Qual | 2018/06/16 09:40 | Shuichi Sekiguchi v Gerard Granollers-Pujol | 6-1,6-4 |
| Challenger Almaty | 2018/06/12 05:30 | Nino Serdarusic v Gerard Granollers-Pujol | 6-3,7-6 |
| Lotto NK Tennis | 2018/12/15 12:30 | Scott Griekspoor v Tallon Griekspoor | 6-7,6-3,4-3 |
| Lotto NK Tennis | 2018/12/14 11:00 | Botic Van De Zandschulp v Tallon Griekspoor | 3-6,3-2 |
| ATP Antwerp | 2018/10/15 09:00 | Tallon Griekspoor v Stephane Robert | 7-6,6-3 |
| ATP Antwerp | 2018/10/14 09:00 | Corentin Moutet v Tallon Griekspoor | 2-6,1-6 |
| Challenger Orleans | 2018/09/28 18:35 | Luca Vanni v Tallon Griekspoor | 6-3,6-4 |
| Challenger Orleans | 2018/09/27 16:00 | Tallon Griekspoor v Corentin Moutet | 6-4,6-3 |
| Challenger Orleans | 2018/09/26 17:30 | Tallon Griekspoor v Nicolas Mahut | 6-3,6-4 |
| Challenger Istanbul | 2018/09/14 13:50 | Quentin Halys v Tallon Griekspoor | 6-4,3-6,7-6 |