| UTR Pro Tennis Series California | 2020/08/14 19:05 | Adamson, Alec v Maier, Jonas | 2-6,0-6 |
| UTR Pro Tennis Series California | 2020/08/13 17:30 | Brymer, Gage v Maier, Jonas | 6-3,6-2 |
| UTR Pro Tennis Series California | 2020/08/12 19:40 | Felix Corwin v Maier, Jonas | 6-4,6-4 |
| UTR Pro Tennis Series California | 2020/08/08 20:00 | Felix Corwin v Maier, Jonas | 7-5,6-1 |
| UTR Pro Tennis Series California | 2020/08/07 19:15 | Boyer, Dusty H v Maier, Jonas | 6-3,5-7,6-10 |
| UTR Pro Tennis Series California | 2020/08/06 17:40 | Brymer, Gage v Maier, Jonas | 6-4,6-7,10-3 |
| Las Vegas, Singles M-ITF-USA-07A | 2020/03/03 18:00 | Hovhannisyan, Mousheg v Maier, Jonas | 6-1,7-5 |
| Las Vegas, Singles M-ITF-USA-07A | 2020/03/02 20:00 | Abdelouahid, Anas v Maier, Jonas | 2-6,5-7 |
| UTR Pro Tennis Series California | 2020/09/19 16:20 | Nedelko, Ivan v Lopez, Luis Humberto | 6-1,7-5 |
| UTR Pro Tennis Series California | 2020/09/18 15:00 | Nedelko, Ivan v Ortlip, Joshua | 0-6,1-6 |
| UTR Pro Tennis Series California | 2020/09/17 15:00 | Nedelko, Ivan v Karimov, Jurabek | 7-5,6-3 |
| UTR Pro Tennis Series California | 2020/09/14 21:35 | Nedelko, Ivan v Nick Chappell | 5-7,5-7 |
| UTR Pro Tennis Series California | 2020/09/13 17:40 | Nedelko, Ivan v Keegan Smith | 5-7,1-6 |
| UTR Pro Tennis Series California | 2020/09/13 16:20 | Nedelko, Ivan v Felix Corwin | 6-4,4-6,7-10 |
| UTR Pro Tennis Series California | 2020/09/12 16:20 | Brymer, Gage v Nedelko, Ivan | 6-4,5-7,11-13 |
| UTR Pro Tennis Series California | 2020/09/12 15:00 | Nedelko, Ivan v Karimov, Jurabek | 7-6,4-6,3-10 |