Host B.J. Koubaroulis previews the 6A Northern region semifinal between No. 3 Lake Braddock and No. 7 Westfield. (Nick Plum for Synthesis/Koubaroulis LLC./The Washington Post)
Virginia 6A North region semifinals

No. 19 Stonewall Jackson at No. 2 Centreville

Saturday, 1:30 p.m.

At stake: A berth in the 6A North region final

Watch for: The big play. Five of Stonewall Jackson’s touchdowns last week came via gains of 30-plus yards. Centreville had the same number of such plays in its 55-35 comeback win over South County. Raiders senior quarterback Greg Stroman (Virginia Tech) has gained 1,110 rushing yards despite missing parts of four games with a hip injury. He’s averaging close to 10 yards per carry for the Raiders (8-4). Wildcats running back AJ Turner (975 rushing yards, 19 touchdowns) is the home-run component to Centreville’s Wing-T attack. The Wildcats (12-0) have outscored opponents 558 to 122 this season.

Skinny: Centreville won the AAA Division 6 title in 2000 and appeared in the title game again in 2011. Stonewall Jackson started 9-0 last season but dropped its final two games, including a 31-30 loss to Colonial Forge in Northwest region play.

AJ Turner is a big play threat every time he touches the ball for Centreville. Stonewall Jackson’s defense will be keying on him in Saturday’s Virginia 6A North region semifinal. (John McDonnell/The Washington Post)

No. 7 Westfield at No. 3 Lake Braddock

Saturday, 1:30 p.m.

At stake: A berth in the 6A North region final

Watch for: The defensive battles. Like most teams at this point in the season, players on both teams are banged up with injuries. Lake Braddock defensive lineman Dwight Lomax is out for the playoffs with a fractured kidney and senior lineman Lance Hammond is battling a knee injury. Meantime, Westfield defensive lineman Tyler Sevener has struggled with multiple injuries. In the teams’ first meeting this season, a 28-24 comeback win by Lake Braddock on Sept. 20, the Bruins struggled to slow Westfield’s rushing attack led by Tyler Thrasher-Walker and fell behind in the fourth quarter. But a late interception and Lake Braddock’s success in the hurry-up offense sealed the final outcome.

Bruins dual-threat quarterback Caleb Henderson, a North Carolina recruit, has totaled 2,926 yards and 37 touchdowns passing and rushing and thrown just three interceptions. Fresh off a career-high 207 rushing yards in last week’s win against Robinson, Thrasher-Walker has racked up 1,724 yards and 21 touchdowns this year.

AJ Alexander (24) and Josh Churchill (21) celebrate Alexander’s game-winning touchdown catch from Lake Braddock’s Sept. 20 win over Westfield. (Richard A. Lipski/For the Washington Post)

Skinny: Lake Braddock (12-0) is looking to make it to the fourth round of the playoffs for the first time since 2010, when the Bruins lost in the state semifinals to Battlefield. Following consecutive 12-0 starts, Westfield (10-2) has fallen in the third round of the playoffs in each of the last two years.