Potomac (Md.) sophomore Randall Broddie grabbed a loose ball and pushed it quickly ahead, where junior teammate Dion Wiley could catch the pass in stride.

With a Reservoir defender closing in, Wiley eschewed a crowd-pleasing dunk for a simple layup and a seven-point lead midway through the fourth quarter of Thursday’s Maryland 3A state semifinal.

Broddie and Wiley made it look just that easy at times, taking turns attacking the defense in Potomac’s 64-57 win at the University of Maryland’s Comcast Center.

Broddie shook off early foul trouble to finish with 22 points and Wiley scored 18 of his game-high 25 points in the second half to lift the Wolverines to their first state final since 2005.

The Oxon Hill school advanced to meet 3A North champ Milford Mill in Saturday’s final at 3 p.m in College Park. The Millers blew past Urbana, 78-53, in the earlier semifinal.

Potomac’s Chris Winn drives to the basket as Reservoir’s Matt Christian defends during Thursday’s 3A semifinal at Comcast Center. (Jonathan Newton/The Washington Post)

“We’re not a two-pony show or a one-horse show,” Coach Renard Johnson said, “but it starts with your horses.”

In its first state tournament appearance, Reservoir (19-7) went after Potomac (22-3) early. The Wolverines picked up seven fouls in less than seven minutes, including two for Broddie, and Johnson was given a technical foul voicing his displeasure.

Neither team led by more than four points until Potomac went on a 10-2 run to close the third quarter.

Wiley’s three-pointer with 1 minute 17 seconds left in the third period gave the Wolverines the lead, and his triple just before the quarter-closing buzzer made increased the lead to 52-45.

Reservoir continued to hang tough, pulling within 61-57 on a pair of free throws by junior Kyle Reilly (team-high 14 points). Broddie answered with a free throw and the Gators’ last gasp was a misfired three-pointer.

“I’m just really proud of this group,” first-year Reservoir Coach Michael Coughlan said. “Nobody knew who we were at the beginning. This school has never done anything basketball-wise.”

Wiley, one of the area’s most coveted recruits with the University of Maryland among his suitors, was mostly quiet until a pair of three-pointers put him back on track. The 6-foot-4 swingman scored all three of the team’s field goals in the final quarter and had 10 of his team’s 12 points, with Broddie adding the other two from the free throw line.

The victory continued the program’s quick ascent in Wiley’s two-year varsity career. The Wolverines jumped from four wins two years ago to 18 last season and will now try for their fourth state title.

“[Broddie takes] the pressure off of me from the defense,” Wiley said. “I know they’re coming after me, and now since Broddie is here, they come after both of us.”