| ITF Germany F9 | 07/24 17:30 | 25 | Botezan, George v Schmitz, Constantin | 2-6,7-5,3-6 | |
| ITF Germany F9 | 07/23 10:00 | 62 | Seraphim, Christian v Schmitz, Constantin | 3-6,4-6 | |
| ITF Germany F9 | 07/22 08:00 | 62 | Schmitz, Constantin v Chaukulkar, Tejas | 6-3,6-1 | |
| ITF USA F37 | 11/14 16:00 | 25 | Schmitz, Constantin v Nuno Borges | 1-6,7-6,2-6 | |
| ITF USA F36 | 11/13 16:00 | 29 | Schmitz, Constantin v Mina, Gianni | 6-4,1-6,0-6 | |
| ITF USA F36 | 11/12 19:00 | 28 | Schmitz, Constantin v Statham, Rubin | 6-3,2-6,7-6 | |
| ITF USA F36 | 11/11 16:00 | 27 | Maxime Chazal v Schmitz, Constantin | 6-3,2-6,4-6 | |
| ITF USA F36 | 11/10 16:00 | 26 | Schmitz, Constantin v Felix Auger Aliassime | 6-0,6-2 | |
| ITF USA F36 | 11/08 17:45 | 25 | Schmitz, Constantin v Carter, Andrew | 6-2,6-1 | |
| ITF USA F36 | 11/07 15:30 | 60 | Schmitz, Constantin v Isaiah Strode | 4-6,6-4,6-3 | |
| ITF USA F36 | 11/06 16:00 | 60 | Schmitz, Constantin v Kalman Boyd | 6-1,6-0 | |
| ITF USA F32 | 11/12 17:45 | 26 | Carter, Andrew v Schmitz, Constantin | 7-5,6-1 | |
| ITF USA F32 | 11/11 15:00 | 25 | Schmitz, Constantin v Baughman, Deiton | 6-4,6-4 | |
| ITF USA F32 Qual | 11/09 15:00 | 60 | Schmitz, Constantin v Perez, Alfredo | 7-5,6-2 | |
| ITF USA F32 Qual | 11/07 14:00 | 60 | Nathan Ponwith v Schmitz, Constantin | 7-5,0-6,4-6 | |
| ITF USA F32 Qual | 11/06 16:00 | 60 | Schmitz, Constantin v Akhmaev, Iznaur | Retired |