Showing little mercy for outmanned Mackin, top-ranked Flint Hill put on a near-flawless performance last night in defeating the Trojans, 77-38, in a boys high school basketball game at Georgetown University's McDonough Gymnasium.

Flint Hill (16-0) got superb efforts from all-America junior Dennis Scott (21 points, 6 rebounds, 6 assists), Sam Jefferson (23 points, 10 rebounds, 3 blocks) and Brian Domalik (8 points, 6 assists).

Mackin found out quickly why the Falcons are the nation's No. 1-ranked team. Utilizing a full-court zone-trap press, the Falcons quickly forced four turnovers and took a 10-0 advantage before Shawn Johnson scored for Mackin with 4:35 to play in the first quarter.

The 6-foot-7 Scott scored six of his 17 first-half points and assisted on three baskets as Flint Hill stretched its lead to 16-2 before Johnson scored again for Mackin.

"We were intimidated by the big court, Scott and the fact that they are number one," said Mackin Coach Butch McAdam. "We can only learn from a game like this."

Offensively, Flint Hill ran the break to perfection, worked for good shots whenever Mackin forced it into a halfcourt game and substituted without missing a step. Defensively, the Falcons were even more impressive. They completely stifled Mackin, cut off the passing lanes, kept a hand in the face of the shooters and went after every loose ball.

"We've been working on our press. We can trap from any position on the floor and we showed them a lot of different looks," Flint Hill Coach Stewart Vetter said. "We want to contest every shot and make them work. Scott gets a lot of points but he gives up the ball, too. Everyone gets involved and we get a lot of layups."

Mackin's third basket came nearly eight minutes after Johnson's jumper and brought a courteous round of applause from the partisan Falcons fans. By that time, Scott, the 6-10 Jefferson and the other Falcons had reeled off 21 consecutive points.

In the run, Scott had seven points and Jefferson, with no one to contest him inside, eight as Flint Hill took a 37-4 lead with three minutes before the half.

Kevin Perry's jumper made it 37-6, but the Falcons, getting two more long jumpers from Scott, led by 43-10 at intermission.

Mackin (8-10) played about as well as it could in the second half. Keith Fisher was the lone Trojan in double figures, finishing with 16 points.