Stadium: Court 5 Round: 25 Ground: Hardcourt outdoor
| ITF M25 Edwardsville | 2019/08/07 22:50 | Johnson, Janmagnus v Caruana, Liam | 0-6,1-6 |
| ITF M25 Edwardsville | 2019/08/06 14:00 | Johnson, Janmagnus v Frye, Bradley | 6-3,6-4 |
| ITF M25 Edwardsville | 2019/08/05 14:00 | Chamdani, Adrian v Johnson, Janmagnus | 7-5,3-6,4-10 |
| ITF M25 Decatur | 2019/07/29 18:00 | Ravichander, Ishaan v Johnson, Janmagnus | 6-3,6-3 |
| ITF M25 Champaign | 2019/07/23 15:00 | Seelig, Kyle v Johnson, Janmagnus | 6-2,7-6 |
| Orlando, Singles Qualifying M-ITF-USA-17A | 2019/06/19 16:15 | Johnson, Janmagnus v Botezan, George | 4-6,1-6 |
| Orlando, Singles Qualifying M-ITF-USA-17A | 2019/06/18 13:00 | Tang, Anthony Jackie v Johnson, Janmagnus | 1-6,5-7 |
| Orlando, Singles Qualifying M-ITF-USA-17A | 2019/06/17 13:00 | Stice, Tyler v Johnson, Janmagnus | 6-7,4-6 |
| ITF M25 Decatur | 2019/07/30 20:45 | Aleksandar Kovacevic v Keenan Mayo | 6-2,6-2 |
| ITF M25 Champaign | 2019/07/26 18:30 | Keenan Mayo v Brooksby, Jenson | 4-6,1-6 |
| ITF M25 Champaign | 2019/07/25 17:00 | Keenan Mayo v AL Allaf, Kareem | 7-5,6-7,7-5 |
| ITF M25 Champaign | 2019/07/23 18:30 | Keenan Mayo v Alexander Brown | 6-4,6-7,7-6 |
| ITF M15 Pittsburgh | 2019/07/03 14:00 | Keenan Mayo v Seelig, Kyle | 3-6,6-4,6-7 |
| Orlando, Singles Qualifying M-ITF-USA-17A | 2019/06/20 13:00 | Keenan Mayo v Kirkov, Vasil | 3-6,3-6 |
| Orlando, Singles Qualifying M-ITF-USA-17A | 2019/06/18 14:00 | Keenan Mayo v Hunter Heck | 7-6,6-3 |
| ITF M15 Champaign | 2019/06/05 23:30 | AL Allaf, Kareem v Keenan Mayo | 6-4,6-4 |