The Wheaton 1967-born team defeated nemesis Potomac Strikers, 3-2, in overtime on a direct-kick goal by Mark Mermelstein for the senior division championship of the boys' Potomac Memorial Youth Soccer Tournament yesterday.

Potomac trailed, 2-0, after one half, but rallied and tied on a goal by Bill Corbett with six minutes left.

Area teams again dominated the tournament, winning all seven of the divisions played on Montgomery County fields. Wheaton clubs won two titles, Potomac clubs two, Bowie, Bethesda and Reston one each.

Dwayne Thomas scored in overtime to give the Potomac Raiders a 1-0 victory over Aspen Hill and a successful defense of its title in the 1968-born division.

The most dominant team of the three-day tournament was the Bowie Cougars in the 1970-born division. They shut out four opponents before winning the title game with Olney, 3-2, on a shootout goal by Steve Mather, their goalie. Mather stopped two of five Olney shots, then made the kick that give Bowie a 4-3 edge in the shootout.

There were 39 teams from outside the area in the 112-team field. The out-of-towners won just 45 of 111 games in bracket play and were 0-6 in the semifinals, despite seedings that separated visiting teams.

"We've had a head start on some other cities," said Coach Don Hall of Wheaton's senior division champion. "Even though they don't usually win, our tournament is attractive to them. They want the top competition."