Stadium: Court 1 Round: 54 Ground: Hardcourt indoor
| ITF M15 Tallahassee | 2021/10/25 13:00 | Dhruv Sunish v Christian Lakoseljac | 6-7,3-6 |
| ITF M25 Vero Beach | 2021/10/19 16:00 | Reece Falck v Christian Lakoseljac | 6-4,6-4 |
| ITF M25 Vero Beach | 2021/10/18 16:00 | Matthew Foster-Estwick v Christian Lakoseljac | 4-6,6-7 |
| ITF M15 Naples | 2021/10/13 18:30 | Christian Lakoseljac v Blu Baker | 4-6,3-6 |
| ITF M15 Naples | 2021/10/12 13:30 | Rubin Statham v Christian Lakoseljac | 6-3,6-0 |
| ITF M15 Naples | 2021/10/11 14:30 | Kyle Overmyer v Christian Lakoseljac | 4-6,0-6 |
| ITF M25 Champaign | 2021/07/26 15:00 | Christian Lakoseljac v Cannon Kingsley | 2-6,2-6 |
| ITF M15 Champaign | 2021/06/21 15:00 | Joshua Ortlip v Christian Lakoseljac | 6-3,6-4 |
| ITF M25 Fayetteville | 2021/09/20 14:00 | Jeffrey Von Der Schulenburg v Carles Hernandez | 6-2,6-2 |
| ITF M15 Xativa | 2021/08/03 16:30 | Carles Hernandez v Alex M Pujolras | 6-3,3-6,1-6 |
| ITF M25 Gandia | 2021/07/21 07:30 | Pawel Juszczak v Carles Hernandez | 7-6,6-2 |
| ITF M25 Gandia | 2021/07/20 08:00 | Carles Hernandez v Lorenzo Joaquin Rodriguez | 6-3,6-1 |
| ITF M25 Gandia | 2021/07/18 10:00 | Alejandro Garcia v Carles Hernandez | 4-6,4-6 |
| ITF M15 Doboj | 2021/07/14 10:10 | Luka Pavlovic v Carles Hernandez | 6-1,5-7,6-4 |
| ITF M15 Doboj | 2021/07/13 10:10 | Lukas Pokorny v Carles Hernandez | 6-7,7-5,8-10 |
| ITF M15 Doboj | 2021/07/12 11:00 | Petar Jovanovic v Carles Hernandez | 6-3,3-6,4-10 |