| 2019 Section XI Overall Championship Bracket | ||||||
| Saturday | Tuesday | Sunday | Wednesday | |||
| February 16, 2019 | February 19, 2019 | February 24, 2019 | February 27, 2019 | |||
| Greenport (20-1) | Wyandanch (17-6) | |||||
| C Champion | A Champion | |||||
| 85-87 | Bridgehampton (13-8) | 93-102 | Center Moriches (18-5) | |||
| @ William Floyd HS | C/D Champion | @ Farmingdale State | A/B/C/D Champion | |||
| Bridgehampton (12-8) | 53-111 | Center Moriches (17-5) | 76-70 | Center Moriches (19-5) | ||
| D Champion | @ William Floyd HS | B/C/D Champion | @ Walt Whitman HS | Section XI Champion | ||
| Center Moriches (16-5) | Brentwood (23-1) | |||||
| B Champion | AA Champion | |||||