Round: 46 Ground: Clay
| ATP Barcelona Qual | 2018/04/21 10:35 | Inigo C Huegun v Pablo Andujar | 1-6,3-6 |
| Challenger Tunis Qual | 2018/04/14 14:45 | Inigo C Huegun v Daniel Gimeno-Traver | 6-4,3-6,6-7 |
| ITF Portugal F7 | 2018/04/11 10:00 | Inigo C Huegun v Fabien Reboul | 2-6,1-6 |
| Challenger Alicante Qual | 2018/03/31 14:00 | Inigo C Huegun v Ivan Gakhov | 4-6,6-7 |
| Challenger Marbella Qual | 2018/03/24 14:30 | Inigo C Huegun v Marko Djokovic | 5-7,3-6 |
| Challenger San Francisco | 2018/02/07 00:30 | Inigo C Huegun v Jason Jung | 2-6,0-6 |
| Challenger Dallas | 2018/01/30 22:15 | Inigo C Huegun v Taylor Fritz | 2-6,7-5,1-6 |
| Challenger Dallas Qual | 2018/01/29 16:00 | Inigo C Huegun v Maximo Gonzalez | 6-3,2-6,6-4 |
| Challenger Rome Qual | 2018/05/06 08:00 | Gianmarco De Santis v Andrea Guerrieri | 0-6,0-6 |
| ITF Italy F9 | 2018/04/22 12:00 | Andrea Guerrieri v Giovanni Rizzuti | 4-6,5-7 |
| ITF Italy F8 Qual | 2018/04/16 12:00 | Antoine Bellier v Andrea Guerrieri | 6-0,6-7,6-4 |
| ITF Italy F8 Qual | 2018/04/15 12:00 | Marek Flinner v Andrea Guerrieri | 2-6,0-6 |
| Challenger Barletta Qual | 2018/04/07 12:55 | Andrea Guerrieri v Kimmer Coppejans | 4-6,1-6 |
| ITF Italy F5 | 2018/03/28 11:55 | Lenny Hampel v Andrea Guerrieri | 6-3,6-1 |
| ITF Greece F3 | 2018/03/10 07:30 | Marek Flinner v Andrea Guerrieri | 6-3,3-6,6-1 |
| ITF Greece F2 | 2018/03/06 12:25 | Jakob Sude v Andrea Guerrieri | 6-4,6-3 |