Stadium: Court 5 Round: 54 Ground: Clay
| ITF M25 Bakersfield | 2023/03/13 19:30 | Alex Sklizovic v Toby Martin | 0-6,0-6 |
| ITF M25 Decatur | 2022/08/01 14:00 | Jibril Nettles v Alex Sklizovic | 6-2,6-1 |
| ITF M25 Edwardsville | 2022/07/25 14:00 | Christian Lakoseljac v Alex Sklizovic | 6-0,6-2 |
| ITF M15 Los Angeles | 2022/06/26 17:00 | Alex Sklizovic v Jeremy Field | 2-6,3-6 |
| ITF M25 Wichita | 2022/06/14 14:00 | Alex Sklizovic v Avery Zavala | 3-6,5-7 |
| ITF M25 East Lansing | 2022/06/06 13:30 | Perry Gregg v Alex Sklizovic | 6-3,6-4 |
| ITF M25 East Lansing | 2022/06/05 16:00 | Brian Glassmoyer v Alex Sklizovic | 0-6,0-6 |
| ITF USA F35 | 2016/10/28 18:00 | Alex Sklizovic v Alexey Nesterov | 1-6,1-6 |
| ITF M25 Tsukuba | 2023/03/27 02:00 | Jeremy Jin v Leo Vithoontien | 1-6,6-1,10-6 |
| ITF M15 Naples | 2023/02/20 14:30 | Lucas Bouquet v Leo Vithoontien | 6-2,6-0 |
| ITF M15 Palm Coast | 2023/02/06 15:00 | Jakub Wojcik v Leo Vithoontien | 6-4,4-6,10-0 |
| ITF M25 Wesley Chapel | 2023/01/25 18:35 | Leo Vithoontien v Jaimee Floyd Angele | 3-6,4-6 |
| ITF M25 Wesley Chapel | 2023/01/24 15:45 | Aleksa Ciric v Leo Vithoontien | 6-7,6-7 |
| ITF M25 Wesley Chapel | 2023/01/23 14:45 | Xavier Lawrence v Leo Vithoontien | 2-6,6-2,8-10 |
| ITF M15 Ithaca | 2023/01/16 18:30 | Jack McCarthy v Leo Vithoontien | 3-6,6-4,10-4 |
| ITF M15 Winston-Salem | 2022/11/08 17:30 | Christian Lakoseljac v Leo Vithoontien | 6-3,6-4 |