Stadium: Serena Wines 1881 Round: 14 Ground: Clay
| ITF M25 Ulcinj | 2022/05/17 10:25 | Niki Kaliyanda Poonacha v Alex Barrena | 2-6,2-6 |
| ITF M25 Bolzano | 2023/08/04 08:30 | Giovanni Oradini v Alex Barrena | 6-3,6-4 |
| ITF M25 Bolzano | 2023/08/03 08:55 | Filippo Speziali v Alex Barrena | 2-6,1-6 |
| ITF M25 Bolzano | 2023/08/02 11:20 | Giulio Perego v Alex Barrena | 2-6,6-3,3-6 |
| ITF M25 Bolzano | 2023/07/31 15:25 | Davide Galoppini v Alex Barrena | 1-6,3-6 |
| ITF M25 Kramsach | 2023/07/26 10:00 | Peter Heller v Alex Barrena | 6-3,3-6,6-1 |
| ITF M25 Telfs | 2023/07/20 08:55 | Alex Barrena v Kai Wehnelt | 6-3,6-1 |
| ITF M25 Telfs | 2023/07/19 09:55 | Alex Barrena v Niklas Waldner | 6-4,6-4 |
| Challenger Salzburg | 2023/07/12 09:00 | Juan Manuel Cerundolo v Alex Barrena | 6-2,4-6,6-1 |
| Challenger Porto | 2023/07/31 12:40 | Kenny de Schepper v Niki Kaliyanda Poonacha | 6-2,6-4 |
| Challenger Porto | 2023/07/30 17:20 | Niki Kaliyanda Poonacha v Luca Potenza | 7-5,6-1 |
| Challenger Astana | 2023/07/25 09:45 | Rubin Statham v Niki Kaliyanda Poonacha | 6-1,6-4 |
| Challenger Astana | 2023/07/24 06:50 | Niki Kaliyanda Poonacha v Arslanbek Aitkulov | 6-1,6-3 |
| Challenger Astana | 2023/07/23 08:40 | Niki Kaliyanda Poonacha v Mustafa Dustov | 6-3,6-2 |
| ITF M15 Monastir | 2023/07/14 08:00 | Enzo Wallart v Niki Kaliyanda Poonacha | 6-3,6-0 |
| ITF M15 Monastir | 2023/07/13 08:00 | Adam Nagoudi v Niki Kaliyanda Poonacha | 6-7,1-6 |
| ITF M15 Monastir | 2023/07/11 08:30 | Kody Pearson v Niki Kaliyanda Poonacha | 6-7,6-3,3-6 |