Stadium: Court 1 Round: 25 Ground: Hardcourt indoor
| Challenger Champaign | 2021/11/19 19:45 | Aleksandar Vukic v Go Soeda | 6-2,6-2 |
| Challenger Champaign | 2021/11/18 18:45 | Go Soeda v Jason Jung | 6-4,5-7,6-4 |
| Challenger Champaign | 2021/11/16 17:00 | Go Soeda v Thai-Son Kwiatkowski | 6-1,6-4 |
| Challenger Knoxville | 2021/11/10 19:45 | Christopher Eubanks v Go Soeda | 6-3,2-6,7-6 |
| Challenger Knoxville | 2021/11/08 17:50 | Go Soeda v Malek Jaziri | 6-4,7-6 |
| Challenger Charlottesville | 2021/11/03 16:00 | Emilio Nava v Go Soeda | 2-6,7-6,6-2 |
| Challenger Charlottesville | 2021/11/01 18:35 | Tatsuma Ito v Go Soeda | 6-7,5-7 |
| Challenger Biel | 2021/09/22 15:40 | Alexander Shevchenko v Go Soeda | 7-6,6-4 |
| Challenger Puerto Vallarta | 2021/11/25 22:35 | Yosuke Watanuki v Tung-Lin Wu | 6-7,7-5,6-3 |
| Challenger Puerto Vallarta | 2021/11/23 21:00 | Liam Draxl v Tung-Lin Wu | 3-6,1-6 |
| Challenger Champaign | 2021/11/16 20:50 | Aleksandar Vukic v Tung-Lin Wu | 6-3,6-3 |
| Challenger Charlottesville | 2021/11/04 16:00 | Aleksandar Vukic v Tung-Lin Wu | 3-6,6-3,6-2 |
| Challenger Charlottesville | 2021/11/02 23:00 | Nick Chappell v Tung-Lin Wu | 4-6,3-6 |
| Challenger Las Vegas | 2021/10/24 19:55 | Tung-Lin Wu v Alfredo Perez | 6-7,4-6 |
| Challenger Istanbul | 2021/09/19 12:00 | James Duckworth v Tung-Lin Wu | 6-4,6-2 |
| Challenger Istanbul | 2021/09/18 10:40 | Borna Gojo v Tung-Lin Wu | 4-6,6-3,4-6 |