Stadium: Court 4 Round: 54 Ground: Hardcourt outdoor
| UTR Pro Tennis Series Florida | 2021/12/18 14:30 | Brandon Holt v Shunsuke Mitsui | 3-6,6-4,6-3 |
| UTR Pro Tennis Series Florida | 2021/12/17 19:00 | Matthew Segura v Shunsuke Mitsui | 3-6,2-6 |
| UTR Pro Tennis Series Florida | 2021/12/16 14:00 | Alejandro Moreno v Shunsuke Mitsui | 2-3 |
| UTR Pro Tennis Series Florida | 2021/12/14 19:00 | Steven Forman v Shunsuke Mitsui | 6-3,2-6,3-5 |
| UTR Pro Tennis Series Florida | 2021/12/13 17:00 | Shunsuke Mitsui v John Mercer | 6-1,6-0 |
| ITF M15 East Lansing | 2021/11/18 18:00 | Raymond Sarmiento v Shunsuke Mitsui | 4-6,6-2,7-6 |
| ITF M15 East Lansing | 2021/11/17 17:55 | Joshua Peck v Shunsuke Mitsui | 6-0,4-6,5-7 |
| ITF M15 East Lansing | 2021/11/16 15:00 | Shunsuke Mitsui v Adit Sinha | 6-2,6-4 |