No. 1 Amity 3, No. 8 North Haven 2: Mark Esposito’s game-winning single scored Joe Ciancola in the bottom of the seventh to help the Spartans avoid an upset against the Indians.

Ciancola and Lou Concato combined to hold North Haven to three hits. Ciancola pitched six innings and struck out seven, while Concato struck out the side in the seventh for Amity. Mark Zurlis had a single and a run for North Haven.

So the semifinals are set for Thursday at Yale Field.

No. 2 Law vs. No. 3 Shelton, 4 p.m.

No. 1 Amity vs. No. 5 Xavier, 7 p.m.