Henri deLozier and Tony Ciconte, champions in 1980, edged Fort Hunt High School brothers John and Doug McMahon of the host club on the first extra hole and then eliminated Charlie Holden and Jordan Ball, 3 and 2, in the Belle Haven Four Ball golf tournament yesterday.

The veterans against the high schoolers, the medalists, in a morning opening match drew the largest gallery of the day and did not disappoint. The match was even going into the uphill par-4 18th hole. DeLozier appeared to clinch the match when he hit his ball into the hole from eight feet for birdie 3, but muscular Doug McMahon rapped his downhill 25-foot putt into the cup for a matching birdie to send the contest into extra holes.

On the par-5 first playoff hole, deLozier hit a long drive and then hit a three-iron second shot more than 200 yards onto the green, eight feet from the flag stick. "That three-iron was one of the best shots I've hit in seven or eight years," deLozier said. After Doug McMahon drove into the water and John into the rough and neither reached the green until his fourth shot, deLozier putted for his birdie and victory.

Marty West of Columbia, winner in 1972 with Bill Mallon, teamed with Gill FitzHugh of Army Navy and defeated last year's champions, Randy Morris of Washingtonian and Brian Willard of Congressional, 5 and 4, in a second-round match.

West-FitzHugh will play Buddy Peoples of Crofton and Butch Mielke of Wicomico in this morning's first semifinal at 8, followed by deLozier-Ciconte versus Ted Vallo and Bill Hess of Reston.

Excellent putters, Peoples and Mielke were nine under par for their two matches. They defeated Ed Volm of Robindale and Greg Underwood, unaffiliated, 3 and 1, and Bill Scott of Columbia and Ned Longson of Manor, 4 and 3.

Vallo-Hess won their afternoon match over Jaime Gough of Army Navy and Bob Hullender of Andrews Air Force Base, 1 up, when Vallo sank a 13-foot birdie putt on the final hole.

Against Willard-Morris, West birdied the first two holes and parred the third for a 3-up lead and the defending champions never recovered.

West-FitzHugh had a tougher match in their morning round when they edged American University long hitter Greg Carpousis of Army Navy and David Cohn of Bethesda, 2 and 1. FitzHugh sank a 12-foot birdie putt at the 15th hole to put his team 2 up and the match ended at the 17th hole. West and FitzHugh lost in last year's first round.

In a first-flight match, Ray Anderson of Chantilly made a hole in one on the 180-yard 17th hole with a five-iron and then birdied the 18th hole to send himself and partner Donald Ward into extra holes against Ernie Turner and Mike Reed of Reston South. Turner and Reed finally won on the 20th hole.

Rick Cage, playing in the third flight, also aced the 17th hole, using a four-iron.

Former British and U.S. Amateur champion Vinnie Giles of Richmond and partner Dave Wysong of the host club were defeated in the first round of the first flight by Bill Irwin and Ed Percival of Quantico, 1 up.