Dwight Madison's long single to center field, off the glove of Catholic's John Giovannone with one out in the ninth inning, allowed Bill O'Leary to score from second and ended the Cardinals' seven-game winning streak, 5-4, yesterday at Georgetown.

Brian O'Hea started the Hoyas' rally with a soft double to right off Catholic starter John Arensmeyer (4-2), the ball landing between three fielders. Arensmeyer then intentionally walked O'Leary and was relieved by another left-hander, John Walker. Fred Keefe's attempted sacrifice bunt forced pinch runner Jose Casal at third before Madison hit the next pitch to the wall.

Georgetown's Kris Kinscherf (3-4) won in relief, working three innings and giving up one hit and one run in the ninth, when Catholic (16-9) made it 4-4. Dan Cassidy reached base on a bunt single, stole second, went to third on a ground out and scored on Kinscherf's wild pitch.

"Kris isn't really a reliever," said Georgetown Coach Ken Kelly. "But we've got a lot of trouble with our pitching staff." Kinscherf and starter Tom Bass held the Cardinals, who were hitting .339, to seven hits.

Had Catholic not tied, Madison still would have produced the game-winning hit. His line-drive single to left after O'Leary tripled gave the Hoyas (11-14) their first lead, 4-3, in the seventh.

In other games, Jeff Beard drove in five runs with a homer and two singles as Old Dominion (29-8-2) beat George Washington (13-19), 9-3, on the West Ellipse; Rick Knapp remained unbeaten in eight decisions, holding George Mason (11-16) to five hits as Virginia Tech (35-6) won, 7-0, in Fairfax; Prince George's (5-7) took advantange of 13 Montgomery-Germantown errors for a 7-2 Maryland JuCo League victory at Germantown.

In the first round at the Atlantic Coast Conference tournament in Chapel Hill, N.C., Barney Spooner's two-out, bases-loaded double in the bottom of the eighth enabled second-seeded North Carolina to defeat Maryland, 8-7. Kevin Clarke's three-run homer highlighted a four-run third and Matt Vatlin (4-2) completed his third straight game as Virginia (17-19) downed Wake Forest (23-11), 10-4; Georgia Tech beat North Carolina State, 5-1, and Clemson defeated Duke, 10-9.