| 2020 NYSAIS Class C Playoff Bracket | ||||
| ROUND 1 | QUARTERFINAL | SEMI FINAL | FINAL | |
| February 19, 2020 | February 20, 2020 | February 22, 2020 | February 24, 2020 | |
| 1 Fiends Seminary (20-6) | ||||
| 82-54 | 1 Fiends Seminary (21-6) | |||
| 9 Brooklyn Friends (20-4) | @ Grace Church | |||
| 73-70 | 8 Berkeley Carroll (11-14) | |||
| @ Grace Church | ||||
| 8 Berkeley Carroll (10-14) | ||||
| 63-45 | 1 Fiends Seminary (22-6) | |||
| @ Highest Seed | ||||
| 5 Columbia Prep (17-8) | ||||
| 50-41 | 4 Packer Collegiate (16-9) | |||
| @ Highest Seed | ||||
| 4 Packer Collegiate (15-9) | ||||
| 52-48 | 1 Fiends Seminary (23-6) | |||
| @ Fieldston School | Class C Champion | |||
| 3 Rye Country Day (13-10) | ||||
| 76-66 | 3 Rye Country Day (14-10) | |||
| @ Highest Seed | ||||
| 6 Browning (19-6) | ||||
| 67-58 | 3 Rye Country Day (15-10) | |||
| @ Highest Seed | ||||
| 7 Stony Brook (9-9) | ||||
| 65-54 | 2 Martin Luther (16-7) | |||
| @ Highest Seed | ||||
| 2 Martin Luther (15-7) | ||||