The 75th Middle Atlantic Amateur championship as lush Five Farms today was still anybody's golf tournament with four players tied at eight over par, 148 and three a stroke behind.

The leaders were Jim Fitzgerald, Potomac Calley; Chip Heyl, Reston; Jay Sigel of Philadelphia, and Duke Delcher, Northfield, N.J.

Henri deLozier of Columbia Country Club, the first-day leader, slipped to a 78 for a 149 total after a taking a triple-bogey eight on the sixth hole. DeLozier lost his concentration and hurried his drive trying to avoid a car crossing the golf course.

Also at 149 was defending champion Marty West of Columbia, who came back with a round of 72 after an opening 77.

Joining DeLozier and West was Dan Kardash, the local, Baltimore area favorite who is the Five Farms champion. He had 76 to go with his first day's 73.

Sixty players made the second cut for Saturday's third round. After that the field will be reduced to 40 and ties for Sunday's final 18 holes.

West, regaining the brilliant form that has made him one of the top amateurs in the country, had two nines of 36. He carded two birdies and four bogeys, three of the latter stemming from bad second shots. He required only 34 putts and had only one three-putt green.