The ground game helped the Eagles control the game and take a 29-7 lead late in the third quarter.
Running back Robert Murtha led the team with 182 yards and he had a 74-yard touchdown run. He exited the game in the third quarter after his 14th carry because of an abdominal strain. Bargas expects the junior to return.
If Murtha cannot go next week, Estancia has a more-than-capable replacement in Alex Trancoso. The senior tailback came in for Murtha when he was hurt and rushed for 120 of his 129 yards in the second half.
Trancoso found the end zone twice, scoring from three yards out in the third quarter and from 31 yards in the fourth quarter.
Costa Mesa picked a good way to go into its bye week. The Mustangs should be well-rested when they play Godinez on Oct. 14 at Jim Scott Stadium.
But to Grant, two blowout wins in the first five games — also counting a 42-7 win over Santiago on Sept. 8 — have been a mixed blessing.
"The downside is that we've had two games like this where we've only played a half," Grant said. "You have kids that aren't playing four quarters of football. When we play the good teams [in league], Godinez, Laguna Beach, Estancia, we've got to play four full quarters of football."
The Mustangs will be trying for their first league title since 2008.
CdM's lop-sided victory allowed Coach Scott Meyer to empty the bench, which afforded freshmen running backs Cole Martin, Hugh Crance and Barrett Barbato to have a moment in the varsity spotlight.
Martin had a 45-yard run, Crance produced a five-yard touchdown run and Barbato had a 22-yard pickup as the trio combined for seven carries in the fourth quarter.
The win also allowed the Sea Kings to assume the No. 1 ranking in the CIF Southern Section Southern Division.
Newport Harbor quarterback Cole Blower and Gyulay found a rhythm late in the second quarter and early in the third quarter.
Blower completed six straight passes during the stretch, four of them going to Gyulay, his top receiver.
The biggest were touchdown passes of 16 and 23 yards. The second score cut San Clemente's lead to 17-12 just 89 seconds into the second half.
Eric Cheng scored Sage Hill's lone touchdown, coming on a 90-yard kickoff return four minutes into the game.
Cheng finished with 163 yards on five kickoff returns and 45 yards on one punt return.
The senior rushed for 40 yards on 10 carries.
Costa Mesa is 4-1 for the first time since 2001.
— From staff reports