La Reina clinched the Frontier League championship on Tuesday by defeating Carpinteria 214-278.
The loss drops Carpinteria, which finishes its season on Thursday in a three-way match with Santa Paula and Foothill Tech, to 8-2 in league play.
Haylee McGovern turned in a round of 3-under 34 to lead La Reina.
Carpinteria’s low scorer was Mikayla Blair at 53. Elizabeth Esquivel and Juliet Parsons were one stroke back at 54.