Stadium: Court 4 Round: 25 Ground: Hardcourt indoor
| ITF M15 Ithaca | 2021/10/08 15:00 | Radu Mihai Papoe v Henry Patten | 2-6,2-6 |
| ITF M15 Ithaca | 2021/10/07 14:00 | Kyle Seelig v Radu Mihai Papoe | 2-6,6-1,2-6 |
| ITF M15 Ithaca | 2021/10/06 15:25 | Radu Mihai Papoe v Adit Sinha | 6-2,6-1 |
| ITF M15 Fayetteville | 2021/09/22 18:50 | Inaki Montes-De La Torre v Radu Mihai Papoe | 7-6,4-6,6-4 |
| ITF M25 Fayetteville | 2021/09/21 14:00 | Kody Pearson v Radu Mihai Papoe | 4-6,3-6 |
| ITF M25 Fayetteville | 2021/09/20 20:30 | Melvin Manuel v Radu Mihai Papoe | 6-7,3-6 |
| ITF M15 Curtea de Arges | 2021/08/09 09:00 | Facundo Arias Bisso v Radu Mihai Papoe | 6-4,6-1 |
| ITF M15 Curtea de Arges | 2021/08/08 10:00 | Radu Mihai Papoe v Vasile Antonescu | 6-0,6-4 |
| ITF M15 Tallahassee | 2021/10/27 13:55 | Alex Knaff v Sho Shimabukuro | 4-6,6-4,4-6 |
| ITF M15 Tallahassee | 2021/10/26 13:00 | Blu Baker v Alex Knaff | 6-7,5-7 |
| ITF M15 Tallahassee | 2021/10/25 13:00 | Alex Knaff v Matthew Dellavedova | 6-4,6-2 |
| ITF M25 Setubal | 2021/10/05 10:00 | Arthur Cazaux v Alex Knaff | 6-1,6-7,10-5 |
| ITF M25 Setubal | 2021/10/04 10:00 | Aditya Katticaren v Alex Knaff | 0-6,0-6 |
| ITF M15 Forbach | 2021/09/27 13:30 | Millen Hurrion v Alex Knaff | 6-3,6-7,10-3 |
| ITF M15 Forbach | 2021/09/26 12:50 | Alex Knaff v Julien De Cuyper | 6-4,6-0 |
| ITF M15 Monastir | 2021/09/12 09:00 | Mattias Southcombe v Alex Knaff | 2-6,7-6,10-7 |