All week the Briar Woods defensive coaches stressed the importance of keeping Loudoun County quarterback Jake Lokey in the pocket and out of the open field — where he has become one of the area’s most lethal passers.

And while the sixth-ranked Falcons could not keep Lokey from scrambling, they made sure his runs ended behind the line of scrimmage.

Led by an overpowering pass rush and an efficient attack, Briar Woods bottled up the Raiders’ passing attack and rolled to a 45-0 victory on a brisk night in Leesburg, earning their third consecutive AA Dulles District championship.

With the win, the two-time defending state champion Falcons (10-0) completed their first perfect regular season, claimed their 24th straight victory overall and clinched the top seed in the Region II Division 4 playoffs. The Raiders (8-2) will be the No. 3 seed in the field.

“Defense has always been our rock,” senior tight end/linebacker Cam Serigne said. “Once our defense forces a turnover, that gets our offense going and we just feed off that momentum.”

Junior defensive back Mitch Krisfaulusi recovered a first-quarter fumble deep in Loudoun County territory and two plays later, senior Cory Colder powered in for a one-yard touchdown.

Two drives later, Falcons junior quarterback Trace McSorley found Serigne on a seam route for a 45-yard touchdown to double the lead.

Briar Woods’ defensive line blew up Loudoun County’s running game at the line of scrimmage and the Falcons’ four-man pass rush had Lokey back-peddling all night.

Serigne, who moved from linebacker to defensive end, and senior linebacker J.T. Logan combined for four of the Falcons’ six sacks, and Briar Woods forced three turnovers and eight punts on the night. South Carolina recruit Matt Rolin and 6-4, 245-pound lineman Nick Merletti also hounded Lokey and combined for 12 tackles.

“The quarterback has been throwing all over the place,” said Krisfaulusi, who also had an interception. “They like to run around when their quarterback runs around, and we just had to stay with our man.”

Briar Woods led 24-0 at the half and held a Raiders’ offense averaging 39 points per game to just 49 yards and four first downs. Loudoun County’s last shutout loss came on Sept. 8, 2006 against Loudoun Valley.

McSorley threw two touchdown passes to bring his season total to 24, Serigne had five catches for 126 yards and Colder chipped in 70 yards on 20 carries as the Falcons notched their third straight shutout.

“We’ve played 30 games the last two seasons, and as a senior, you couldn’t ask for anything more,” Serigne said. “Now we’ve got that 10-0 regular season and it’s time to keep rolling.”