Sophomore tailback Justin Domineck ran for 89 yards and two scores, and sophomore linebacker John Morris led the defense with 16 tackles and three sacks.
Fullerton (1-0) overcame several miscues and got some big plays on both sides of the ball.
Sophomore QB Tom Kirchmeyer had an efficient day, completing 15 of 21 passes for 139 yards, 1 TD, and more importantly no interceptions.
Compton (0-1) had twice as many first downs as FC (25 to 12), more passing yards (310 to 139), more offensive plays (81 to 57), but was dominated by FC`s special teams play.
Fullerton sophomore punter Sam Paulescu booted 7 times for a 47.6-yard avergage, while Compton`s 7 punts went for a 32.3-yard clip.
The Hornets compiled 117 yards on 6 punt returns (all by freshman Deonte Sharp), compared to the Tartars with 39 yards on 3 attempts.
Trailing 14-7 at half, FC scored two TDs in the third quarter: a 1-yard blast on fourth-and-goal by Domineck, and a 17-yard scamper from back-up freshman RB Ronnell Wilson on only his second carry of the season.
With a 21-14 lead, FC squandered another scoring chance with a fumble at the 1-yard line that bounce out of the Compton endzone.
But five plays later, sophomore safety Robert Clark`s diving interception gave the Hornets another chance inside Compton territory.
On the next play, Kirchmeyer connected with sophomore WR Chaz Guinn for a 45-yard score for a 28-14 lead with 8:45 remaining.
From there, the Hornet defense finished what it started from the opening whistle.
FC`s defense finished with 6 sacks, four forced turnovers, and held the Tartars to just 49 rushing yards on 37 attempts.
Compton fumbled on its first play from scrimmage, when sophomore LB Dustin Sober forced Compton RB Rod McNeal to fumble inside the 10-yard line.
Domineck struck quickly with a 9-yard dash up the middle, 12 seconds into the game, to give FC a fast 7-0 lead (kick good).
Compton settled in and scored the next 14 points after a pair of TD passes by Brandon Brooks (22 yards to Joshua Smith and 91 yards to Charles Ealy).