In a rivalry that has been typified by small margins, big plays led No. 4 Westfield to a 40-14 blowout over No. 5 Chantilly on Thursday night.

The Bulldogs (6-0, 2-0 AAA Concorde) opened the game with a 95-yard kickoff return, scored on drives of one, two and six plays and forced three turnovers in a dominant performance against a team that beat them twice last season.

“There was a lot of emotion tonight,” Westfield quarterback Matthew Pisarcik said. “We’ve been really excited about this game all week, we were really focused in practice this week, so that preparation and emotion really helped elevate our game tonight.”

Pisarick was incredibly efficient, completing 9 of 14 passes for 184 yards and two touchdowns. All but one of his passes hit its intended target in the hands. Senior running back Kendell Anderson had 110 yards and a touchdown on 12 carries, and receiver Quentin Basil had three catches for 91 yards and two scores.

The game shifted for good on back-to-back big plays in the second quarter, when linebacker Mo Katz intercepted a pass at the Bulldogs 45-yard line and Pisarcik hit Basil for a 55-yard score on the next play to make it 27-7 with 2 minutes 10 seconds left in the first half.

“The interception they were driving on us and that’s a huge momentum changer,” Katz said. “Momentum is really big in games like this. Our pregame we talked about how these games have always been close, so turnovers are going to be huge.”

Westfield’s fifth scoring drive of the half was the most traditional – a seven-play, 59-yard drive spanning 1 minute 25 seconds on which Pisarcik completed all five of his passes before scoring on a one-yard quarterback sneak on the final play of the half to make it 34-7.

Before that, it had been almost all quick-strike, explosive scores.

Senior Tyrone Walker opened the game by sprinting up the left side almost untouched on a 95-yard kickoff return. Chantilly (5-1, 0-1) answered with a scoring drive to take a 7-6 lead, but Westfield’s offense then began its onslaught.

Pisarcik had a 36-yard scramble on the Bulldogs first drive to set up Anderson’s 11-yard touchdown run. On the second drive, Anderson broke off a 45-yard run to set up Pisarcik’s 22-yard touchdown pass to Basil.

The Katz-Basil combo provided the next blow in a win that announces Westfield as undoubtedly one of the state’s heavyweights.

“We take away from this that we have the potential we thought we had,” Bulldogs Coach Kyle Simmons said. “Now let’s see what we can do with it.”