see Brackets for Section XI Tournament
http://www.sectionxi.org/TOUR/Gbkb.htm 

Regional Semi- Finals

3/7
Class D: Smithtown Christian at Webutuck, SS Seward HS, 5 pm
3/8
Class B: Center Moriches at Locust Valley, Hofstra University, 4 pm

Regional Finals  (*time change)
3/11 
Class AA: Walt Whitman at Baldwin, Farmingdale State College, *12 pm
Class A: SWR at Manhasset, Farmingdale State College, 2 pm
Class C: Millbrook at Port Jefferson, Farmingdale State College, 6 pm
Class D: Smithtown Christian at Oxford Academy ,Visions Veterans Memorial Arena, Binghamton, 12 pm

NYSPHSAA Championship 
https://nysphsaa.org/tournaments/?id=5&path=