Katharine Blackburn tied the game with 7.1 seconds in regulation and Libby Hooper scored in the fourth overtime as top-seeded Cape Elizabeth/Waynflete/South Portland escaped with a 5-4 win over No. 4 Falmouth in a South girls’ hockey semifinal Saturday at Troubh Ice Arena in Portland.

Falmouth was on the verge of an upset after Amelia Brann’s second goal of the game made it 4-2 early in the third period. Marina Bassett started Cape’s comeback at 6:49 of the third.

Sofia Cook and Delaney Whitten also scored for the Capers. Falmouth’s Trinity Grenier tied the game at 2-2 with a power-play goal in the second period, and Kate Kinley put the Navigators ahead late in the second.