13 games in the PremovedPrep archive. Games as White.
| White | Black | Result | ECO | Event | Date |
|---|---|---|---|---|---|
| Heitling, Mattis | Bulat, Ionut | 0-1 | B10 | LJEM SH 2026 - U16 | 2026-04-09 |
| Heitling, Mattis | Christiansen, Lea-Maileen | 1-0 | C68 | LJEM SH 2026 - U16 | 2026-04-08 |
| Heitling, Mattis | Iden, Florian | 0-1 | B22 | Round 2: Heitling, Mattis - Iden, Florian | 2026-04-07 |
| Heitling, Mattis | Rinow, Maximilian | 0-1 | B10 | Landesjugendeinzelmeisterschaft SH 2025 | 2025-04-17 |
| Heitling, Mattis | Christiansen, Jana-Marie | 0-1 | B23 | Runde 4: Heitling, Mattis - Christiansen, Jana-Marie | 2025-04-15 |
| Heitling, Mattis | Petrow, Andre | 0-1 | B20 | Runde 2: Heitling, Mattis - Petrow, Andre | 2025-04-14 |