The Mustangs were held scoreless until 16 seconds remained in the first period, but Connor Barnes scored on an assist from Ryan Beste to pull them within 2-1. Newbury scored again early in the second period to take a 3-1 lead, but Mira Costa rattled off goals from Max Geoghegan, Lucas Menendez and Barnes to go into halftime leading 4-3.
The Panthers tied it 4-4 early in the third period, but Geoghegan and Jacob Fernandez scored to give the Mustangs a two-goal lead heading to the fourth quarter. Newbury again scored first in the fourth period, making it 6-5 in favor of Mira Costa, but a goal from Josh Murayama and two from Menendez made it 9-5 with 3:15 to play.
Menendez led Mira Costa with three goals, and Barnes (2 goals, 1 assist), Geoghegan (2g), Fernandez (1g, 1a) and Macallan Laver (2a) all had multiple points.
Mira Costa improved to 3-2 and next plays at home against St. John Bosco on Wednesday. Newbury Park fell to 1-1 after opening with a win over Royal on Wednesday. The Panthers open Marmonte League play Wednesday at Agoura.