Dos Pueblos fell behind early and never recovered, falling to Crespi 49-14 in a CIF-SS Division 6 first-round playoff game on Friday night in Encino.
The Chargers got a touchdown from Baylor Huyck on a 65-yard pass from quarterback Trent Jones and a 10-yard scoring run from Udy Loza.
Crespi bolted out to a 21-0 lead in the first quarter and led 35-0 at halftime.
Quarterback Sloan Senofsky capped the opening drive with a 12-yard TD run.
The Celts then surprised DP with an onside kick. After recovering the kick, they scored on a 24-yard pass from Senofksy to Evan Davidson for a 14-0 lead with eight minutes to go in the quarter.
A rushing TD made it 21-0 in the first quarter.
Chance Tucker picked off a DP pass and returned for a touchdown in the second quarter.
The Celts (7-4) added one more score before halftime.
Dos Pueblos finishes the year at 3-8.