Stadium: Court 3 Round: 19 Ground: Hardcourt indoor
| Challenger Knoxville | 2021/11/07 19:10 | Nick Chappell v Monday, Johannus | 6-4,5-7,3-6 |
| ITF M25 Champaign | 2021/09/14 17:00 | Blaise Bicknell v Monday, Johannus | 6-3,6-4 |
| ITF M25 Champaign | 2021/09/13 19:00 | Monday, Johannus v Kenyatte, Kweisi | 6-4,6-4 |
| ITF - M25 Sunderland | 2020/02/23 10:50 | Monday, Johannus v Hersey, Jake | 3-6,6-2,6-10 |
| ITF M25 Glasgow | 2020/02/16 14:45 | Stevens, Bart v Monday, Johannus | 4-6,6-1,10-7 |
| Chiswick, Singles W-ITF-GBR-09A | 2019/08/05 10:50 | Monday, Johannus v Michael Shaw | 6-7,6-3,5-10 |
| ITF M25 Roehampton | 2019/07/29 13:40 | Modica, Sacha v Monday, Johannus | 6-0,6-4 |
| ITF M25 Roehampton | 2019/07/29 08:30 | Monday, Johannus v Pjevcevic, Petar | 6-2,7-5 |
| Challenger Knoxville | 2021/11/07 20:00 | Alexander Brown v Young, Donald | 3-6,6-3,3-6 |
| Challenger Las Vegas | 2021/10/26 22:05 | Young, Donald v Tatsuma Ito | 4-6,4-6 |
| Challenger Las Vegas | 2021/10/25 18:00 | Redlicki, Michael v Young, Donald | 6-7,6-1,6-7 |
| Challenger Las Vegas | 2021/10/24 17:00 | Young, Donald v Darian King | 6-3,3-6,6-4 |
| ITF - M15 Vero Beach | 2021/10/20 23:35 | Young, Donald v Anthrop, Jack | 6-2,7-5 |
| Challenger Columbus | 2021/09/19 17:35 | King, Evan v Young, Donald | 7-5,4-6,6-4 |
| Challenger Cary | 2021/09/13 23:25 | Young, Donald v Denis Kudla | 6-7,6-4,2-6 |
| Winston-Salem, USA | 2021/08/21 19:45 | Young, Donald v Tung-Lin Wu | 0-6,0-6 |