San Dieguito Academy lost to Canyon Crest Academy, 16-12, in a nonleague game on Nov. 1.
Nate Conger and Sam Dumont each scored three goals to lead the Mustangs, while goalie Dylan Herrera had 10 saves.
SDA fell to 18-12 overall for the season.
La Costa Canyon defeated Canyon Crest Academy, 3-2 ( 25-20, 25-20, 13-25, 16-25, 15-7), in a San Diego Section Tournament Open Division quarterfinal on Nov. 4.
The Mavericks improved to 22-9 overall for the season. The Ravens fell to 18-10.