George Mason's soccer team, ranked 11th in the nation, scored on a penalty kick early in the second half today and defeated Navy, 1-0, before 800 at Dewey Field.

The Patriots (12-0) scored at 53:04 when forward Mike Jung broke through the defense but was brought down from behind by fullback Tom Harrigan. Junior Colin Kerr took the penalty kick, driving the ball into the upper right corner for his ninth goal this year.

Twenty-two fouls were called in the game, which nearly got out of hand at 60:00 after a scramble in front of the Patriots' goal. Navy forward Keith Wauter, who had been marked closely by Scott Shiffert, punched Shiffert in the face. A shoving match ensued, bringing both coaches onto the field to calm their players. Navy received two yellow (caution) cards.

"We expected a physical game," said George Mason Coach Richard Broad, whose team has outscored its opposition, 40-1.

The wind was strong and the field was slippery. But the Patriots, who faced the wind in the second half, resorted to a short-passing ground game, which allowed them to move the ball freely. Kerr, who has five game-winning goals this season, nearly scored at 48:40 when he broke down the left side and cut in on goalie Jeff Young. But Kerr's 20-foot shot was wide right.

Navy (6-4-2) carried the play and outshot the Patriots, 12-7, in the first half. The Midshipmen, unbeaten in their last six games, threatened at 13:00, when Harrigan sent a right-side cross into the box, but Howie Hein's header was wide to the left. Five minutes later, Hein worked a give-and-go with Rich Carlson, but Carlson's 25-foot shot went straight to goalkeeper Ken Bernstein.

"They (Navy) are a scrappy team," said Bernstein, who made two saves. "They got a lot of opportunities to score because we pushed the ball upfield so far. That left our halfbacks trying to defend at midfield."