Haldane will meet No. 5 Tuckahoe, a 59-57 upset winner over top-seeded Martin Luther King, Jr Friday in the Class C title game at 5 p.m.
Eli Sierra led Hamilton with had 21 points, including three 3-pointers in the second half.
Hamilton, the second seed, led 32-25 at halftime before Haldane (No. 3 seed) took the lead at 38-37 midway through the third and held on for the win.
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