Kennedy, which has been having trouble scoring goals, compensated by playing outstanding defense to advance to the Maryland State 3A boys soccer semifinals.

The Cavaliers defeated Laurel, 1-0, in overtime in a regional semifinal, then edged Montgomery County rival Richard Montgomery, 1-0, for their second straight regional championship.

Andrew Housman scored Kennedy's lone goal at 55 minutes against Richard Montgomery to put his team (7-5-2) in Friday night's semifinal game against Franklin. Richard Montgomery upset top-seeded Rockville, 2-1, in the Class 3A Region II semifinals before falling to Kennedy.

Kennedy had a 24-2 shot advantage but Richard Montgomery goalie Charles Kauffunger made 12 saves.

Damascus advanced to the Class 2A Region I final before losing to Atholton, 3-1. Damascus defeated South Hagerstown, 2-1, in overtime in the semifinal. Todd Stokes scored for Damascus in the regional final; Tim Whitcome, John Walter and Tony Dedmond scored for Atholton.

Poolesville's boys soccer team reached the Class 1A Region II championship for the first time in the school's history but lost to Brunswick, 1-0, on a penalty kick with 27 seconds left in the first overtime. Poolesville's defense was led by Chris Pierce, Dustin Miller, Jonas Knudsen, Tony Perez, Ben Alnutt, Brad Thoms and Joe Eckenrode. Goalie Pat Mitchell had seven saves. Poolesville advanced to the final with a 1-0 win over Francis Scott Key. Brunswick defeated Owings Mill, 2-0, in its semifinal.

Churchill defeated Bethesda-Chevy Chase, 3-1, before losing to Whitman, 1-0, in the 4A Region II final. Whitman advanced by defeating Walter Johnson, 3-2.

The Paul VI boys soccer team defeated Norfolk Catholic, 4-0, Sunday to win its second straight Virginia Catholic League championship. Carl Krietsch had three goals and Matt Loach one. Krietsch, who scored five goals in the tournament, was named the most valuable player. The victory was the 100th for the school, which has fielded a varsity team since 1984.

Georgetown Day (11-4-3) won the Potomac Valley Athletic Conference championship, defeating Field, 2-1, on penalty kicks. Joshua Tetal scored the winning penalty kick. Alex Christie scored for Field and Thomas Butler for Georgetown Day.

O'Connell (19-0) won its third straight Catholic Girls Athletic Association championship, defeating Holy Cross, 4-0, as Katie Simon scored all four goals. Annie Murphy, Maureen Burns and Kristine Powell earned assists.

McClellan led O'Connell with 30 goals and eight assists. The Knights have won 24 straight games and are 46-1-1 since 1988.Calvert Bucks Tradition

Leonardtown of St. Mary's County and La Plata of Charles County traditionally have dominated the SMAC field hockey competition. The new kid on the block, Calvert (12-1-1 overall, 7-1-1 in SMAC) broke Leonardtown's two-year hold on the conference, region and Maryland State 3A crowns.

"We hope to be starting a tradition for the '90s by building a hockey reputation at Calvert in SMAC," Coach Mary Finley said.

She said a tenacious defense has keyed the team's success. Junior goalie Jennifer Prowinski has yielded three this season.

Calvert won the Region 4 title by downing county rival Northern, 1-0, in double overtime to advance to the state semifinals, then beat Liberty of Carroll County, 1-0. Calvert next plays Magruder in the final.

The Virginia AAA Northern Region field hockey playoffs began yesterday. The region semifinals will be held Wednesday at Langley and Oakton. The championship game is set for Friday at Langley.

For the fourth straight year, B-CC has earned a berth in the Maryland semifinals. The Barons (13-1) face Walter Johnson (12-1-1) Wednesday at Goucher College. B-CC, the state champion in 1988, lost in the finals in '87 and '89. Running to Glory

National Cathedral placed five runners in the top eight to easily win its second straight Independent School League cross-country title Saturday at Bullis. NCS had 27 points, Georgetown Visitation finished second with 53 and Friends was next with 98. Amy Linson of Visitation won the three-mile event in 19:41, nine seconds ahead of runner-up Kate Galbraith of NCS.

Holy Child's lone entry, Desiree Ficker, was third (20:15). NCS's other top finishers were Eleanor Ingraham (fourth, 20:50), Gabrielle Myers (sixth, 21:10), Cathy Hancock (seventh, 21:17) and Genieve Preer (eighth, 21:45).

Edmund Burke won both the boys and girls PVAC cross-country titles at Sandy Spring. Burke's Artoro Marcinez, Zach Brown, David Guyot and Dan Cuddihy finished 1-2-3-5 as Burke won the boys crown with 22 points. Georgetown Day was second with 69, Field School third with 72.

Catherine Cowley finished third to lead the Burke girls to the team title with 53 points. Field School was runner-up with 58. St. Andrew's was next with 59.

Barbara Maloney finished sixth (21:40) and teammate Chrissy James was ninth (21:48) to lead Paul VI to the Virginia Independent School girls cross-country championship. Paul VI finished with 59 points. Courtney Page won the 5,000-meter race in 19:58 to lead St. Catherine's to the runner-up spot with 65 points. Mary Conway's third-place finish (20:32) helped O'Connell place third with 95.

Paul VI's boys got a fourth-place finish from Eric Andreoni (17:11) and finished second overall with 73 points. Woodberry Forest won the title with 55 points. O'Connell was 10th with 261.

Abrahim Aden of Fork Union won the race in 16:21; Woodberry Forest's Lance Kimbrough was second in 16:25 and Christ Church's Greg Belkin third in 17:01.