Cyrus Wallace scored a game-high 19 points as Dos Pueblos won at San Marcos 57-48 in the Channel League opener for both teams.
DP is now 16-2 on the season.
The Chargers led 32-23 at the half and answered each second half run by the Royals.
San Marcos was led by junior Jackson Stormo who had 18 points. San Marcos pulled to within 37-33 in the third quarter but would get no closer.