Updated Saturday, November 3, 2012 at 03:06 PM
SNOHOMISH — Teré Calloway studied video of Glacier Peak and expected some fireworks on offense.
What Calloway didn't expect was a ferocious Grizzlies defense.
Glacier Peak used a stifling defense and a few fireworks on offense to shut down Seattle Prep 28-0 Friday night at Veterans Memorial Stadium in a Class 3A round-of-32 playoff game.
The Grizzlies, ranked No. 6, advance to the first round of the state playoffs for the second time in the program's young existence. Glacier Peak (9-1) will face Mount Si next week.
"As a defensive-minded player — I'm playing defense in college — I was really watching a ton of their passing film to make sure that we'd be able to contain their offense," said Calloway, Seattle Prep's star running back and safety. "Their defense was truly a surprise. We looked at them and they didn't look too big, so we were pretty confident, but they had an incredible defense."
Glacier Peak defensive coordinator Steve Hannan said the Grizzlies' defense challenged itself after giving up more than 500 yards rushing against Marysville-Pilchuck last week.
The Grizzlies came out roaring and contained Seattle Prep's dynamic running-back tandem of Calloway and Charlie Brennan in the first half while Glacier Peak built a 21-0 lead.
"They knew Seattle Prep was going to be a big challenge," Hannan said. "They were going to run the ball right at us just like Marysville did. We took it as a personal challenge to play a little bit better, and they did."
After starting the season 1-4, Seattle Prep came into the postseason on a roll with a four-game win streak.
Glacier Peak rattled off 21 consecutive points in the second quarter on three Chris Becerra touchdown passes.
Becerra completed 16 of 25 passes for 264 yards, twice hooking up with Quinton Dunbar for scores.
Dunbar's second touchdown was set up by a blocked punt recovered at the Seattle Prep 31.
Glacier Peak drove 89 yards in the final minute of the first half, getting a Sean Elledge 43-yard reception with 22 seconds to go.
Calloway finished with 102 yards on 24 carries. Brennan finished with 104 on 21 rushes.