Wilde Lake and Mount Hebron advanced while Atholton, Howard and Centennial were eliminated as the regional boys basketball playoffs tipped off Monday.
For the fourth-seeded Wildecats, their Class 2A Region II victory was a 65-39 cakewalk over fifth-seeded Pikesville.
But for the sixth-seeded Vikings (11-11), playing in the same class and region as Wilde Lake, the win was a nip-and-tuck 59-57 upset triumph over third-seeded Loch Raven.
Andre Johnson sank both ends of a one-and-one with three seconds left for the winning points.
Phil Chenier's 18 points and four blocked shots led Wilde Lake (14-9) to one of its easiest victories of the season.
The 'Cats came out in a full-court man-for-man press against Pikesville (12-8) and the Panthers failed to handle the pressure.
In the first quarter, Pikesville made nine turnovers -- four of them in their first four possessions. The Panthers trailed as the end of the quarter, 21-6.
Wilde Lake's Adam Tyer (nine points) scored seven points in that quarter and Chenier had six.
Pikesville shot only 2-for-10 from the floor that quarter, while the 'Cats went 9-for-18.
The second quarter mirrored the first except that Pikesville hit its offensive boards much better, getting off 22 shots instead of 10.
The Panthers made onlyfive shots, however, and trailed, 38-18, at halftime.
Wilde Lake coaches Paul Ellis and Jerry Keith used 11 players in the first half.
"It was difficult to keep the same intensity that we started the game with," Ellis said.
Wilde Lake pretty much went through the motions in the second half as the quality of its play dropped considerably, but its shooting percentage remained fairly steady.
After shooting 16-for-34 from the floor in the first half, Wilde Lake dropped to 13-for-35 the second half.
Pikesville never made a serious second-half run, however.
The Panthers, sparked by point guard Randy Nusinov, did pull within 13 at 46-33 early in the fourth quarter.
But Wilde Lake scored nine of the next 11 points to pull away again.
Joe Guyton (nine points) sank a three-pointer and scored on a layupand Chenier sank a layup and a dunk during that run.
Wilde Lake'sstarting point guard, David Friedman, did not play much due to a broken nose, and he wore a protective nose guard when he did play.
But George Bradford stepped into a starting guard role and scored 11 points.
Randy Miller played his normal steady game at forward and scored 12 points for Wilde Lake.
Pikesville, apparently unaccustomedto the type of defensive pressure that Wilde Lake applied, made 20 turnovers for the game.
Wilde Lake, missing a healthy Friedman, also made 20 turnovers, although seven of those came in the fourth quarter.
Wilde Lake travels to play top-seeded and undefeated Overlea (21-0) in tonight's semifinal game.
"We can beat Overlea but we have to maintain defensive intensity and keep them from getting the ballinside to their big men," Ellis said. "It will be a battle of speed and quickness vs. size."
In Mount Hebron's win over Loch Raven, Mark Jantac scored 23 points and Andre Johnson had 18 as the only Vikings in double figures.
Mount Hebron built a 28-22 halftime lead andthen held on.
Loch Raven, which caught up and went ahead by two points in the fourth quarter, tied the game at 57 with six seconds left on two free throws.
"We knew it would be close," Vikings coach Chuck Monninger said.
"Kevin Klinedinst did a good job at point guard for us," he added.
The Vikings play at second-seeded Hammond tonight. The Bears have beaten the Vikings twice this season.
In other action, sixth-seeded Centennial lost its Class 3A Region I contestto third-seeded North Hagerstown, 70-58.
Charlie Stewart led Centennial with 23 points. Damian Biggs was the only other Eagle in double figures with 12 points.
Sixth-seeded Atholton lost its Class 2A Region I game to third-seeded Allegany, 88-71.