Washington Redskins safety Greg Williams and Chantilly clubmate Ken Newlin used a run of birdies to oust Marty West of Columbia and Gill FitzHugh of Army Navy, 3 and 2, in the quarterfinals of the Belle Haven Four Ball yesterday.

Williams and Newlin, the reigning Northern Virginia Amateur champion, will play George Washington University golf coach Vern Caswell and his star pupil, Ken Dickler, in this morning's first semifinal at 8, followed by the other semifinal matching medalists George Andre and Gray Tuttle against Scott Inman of Springfield and Gray Hamilton of Tantallon. The final will follow this afternoon.

Defending champions Buddy Peoples and Butch Mielke of Crofton were eliminated in yesterday morning's opening round in 20 holes by Caswell and Dickler, George Washington's most valuable golfer the last two seasons. Dickler then capped an afternoon quarterfinal comeback with a four-foot winning birdie putt on the 18th hole as the GW pair beat Doug Trenor and John Browning of Montclair, 1-up.

Williams plays to a four handicap at Chantilly, where his lowest round is 68. He made three straight birdies on holes three through five to give his team a 2-up advantage over FitzHugh and seven-time Maryland Amateur champion West.

Twice, West brought his team to within one down, but Newlin birdied the par-4 14th hole and the match ended with Williams' birdie on the par-5 16th hole. On the 16th, Williams almost reached the green in two shots, but was in a greenside bunker. He blasted out of the sand to four feet from the hole, made the putt and ended the match.

"We thought we had to play our best golf just to stay with them," said Williams, who plays on all Redskins special teams. "We got on top, and it's a lot easier when you get on top. They let a couple of putts and holes get away."

Newlin, 49, said the key was a winning par on the 10th hole to give his team a 2-up lead. Another important turn was Williams' 30-foot birdie putt on the third hole to give his team a 1-up lead after West and Fitzhugh had pulled even on the previous hole.

"That kind of surprised them," said Newlin.

Caswell and Dickler were 4 up after 11 holes on Mielke and Peoples of Crofton, who had won here three of the last four years.

But after some hot putting by Mielke, and a 12-foot birdie putt at 17 by Peoples, the match was even.

Mielke had a chance to win the match on the first extra hole, but his three-foot birdie attempt missed.

Caswell finally won the match with a 20-foot birdie on the second extra hole.

"It was like life after death," said Dickler of the reprieve the two received when Mielke missed his crucial putt. "They were making everything in sight. It was a matter of time before they missed."

Andre, a commercial airline pilot playing out of Belle Haven, and partner Tuttle of Albemarle, N.C., beat Mike Fraley and George Denryker of Montclair, 2 and 1 in the morning. In their afternoon quarterfinal, they defeated Terry Franus and Matt Ginalick of Holly Hills, 3 and 2.

Inman and Hamilton defeated Mike Paxson and John Broach of Chesapeake in their quarterfinal, 2 and 1.