Cape Elizabeth players and some fans celebrate after beating Yarmouth 6-5 in nine innings Thursday in a Class B South quarterfinal.

Carson Sullivan of Cape Elizabeth drives in the winning run in the bottom of the ninth inning.

Cape Elizabeth teammates mob Carson Sullivan after he drove in the winning run in the bottom of the ninth inning.

James Waaler of Yarmouth prepares to tag out Jameson Bakke of Cape Elizabeth to end the fifth inning.

Jameson Bakke of Cape Elizabeth tries to avoid a tag at the plate from James Waaler of Yarmouth in the fifth inning.

Sean Agrodnia of Cape Elizabeth delivers a pitch in the second inning.

Jameson Bakke of Cape Elizabeth makes a sliding catch to end the top of the fourth inning.

Val Murphy of Cape Elizabeth, right, is joined by Carson Sullivan as he celebrates a double play that ended the top of the fifth inning.

Val Murphy of Cape Elizabeth throws over Jackson Caruso of Yarmouth to complete a double play that ended the top of the fifth inning.

Val Murphy of Cape Elizabeth slides into second base before the tag from Jason Lainey of Yarmouth in the eighth inning.

Yarmouth had plenty to celebrate in the seventh inning after Aidan Hickey, top right, hit a three-run triple and then scored on a hit from by Jason Lainey to tie the game at 5.