Marty West III of Columbia Country Club, a superstar in local golf for the past decade, made a move for his third Middle Atlantic Amateur Championship at Washington Golf and Country Club yesterday with a brilliant three-under-par 67. That gave him a three-round score of 209 and a four-stroke lead over left-hander Steve Fellinger, University of Maryland senior.

The next nearest pursuer, at 216, was defending champion Paul Erhardt of Frazer, Pa., who shot 74 yesterday, the same score turned in by Fellinger, the 22-year-old Canadian who is the best southpaw in the competition. He finished seventh in the Canadian Amateur this past summer.

The field was cut to 42 yesterday, with a score of 234 or better necessary for the tinal round today.

West was the only golfer among the 67 who teed it up to better or equal par on a killing windy day. But the elements didn't bother the 30-year-old West, who has won every major local title in addition to playing in the Masters, the U.S. Open and the U.S. Amateur in past years. West has cut his golf schedule severely because of his workload at a real estate and mortgage firm, but he has not yet joined the ranks of the weekend golfers.

West hit 17 greens and was out of the fairway on his drives only once. He took 31 putts for his round of 35-32-67.

He birdied both par 5s, one of the par 3s, and one of the par 4s. He birdied the fourth from 14 feet, and then parred through the 13th where the got his only bogey by missing a four-foot putt.