Gill FitzHugh of Army Navy, who couldn't do a thing wrong all week in the District Amateur at Chantilly, did very little right yesterday and was swept away by Barry McCarty of Belle Haven, 7 and 5, in their 36-hole final.

FitzHugh, the 1973 champion, was six down to McCarty, a recent Virginia Tech graduate after the morning round. FitzHugh made a determined comeback in the afternoon but it was like walking on a treadmill. He birdied four of the first 10 holes and still couldn't get close.

McCarty cloed it out on the 13th hole of the afternoon round when FitHugh FitzHugh hit his second shot out of bounds and conceded the hole and the match.

"I couldn't make a putt," said the weary FitzHugh, an accountant who plays weekend golf. "Barry made every putt within 10 feet and I missed most of mine. That was the answer. I had three three-putt greens and Barry didn't have any."

McCarty was accompained by his twin brother, Pat. The twins tied for the District two-man team championship last year and this year Barry won the Washington Amateur, an invitational affair.

In the morning, FitzHugh found himself three down by the sixth hole because of his faliure to sink short putts. McCarty birdied the 13th, par-red the 14th and birdied the 17th to go six up at the lunch break.

In the afternoon round, FitzHugh cut the margin to five holes wtih a birdie on the second hole on an eight-foot putt. But McCarty quickly got that hole back on the par-5 third when he chipped withing six feet and made the putt.

FitzHugh birdied the short fourth when he rolled in a 10-footer, but McCarty parred the 190-yard seventh while FitzHugh bogeyed. McCarty went seven up at the ninth when Fitz while FitzHugh bogeyed. McCarty went seven up at the nint when FitzHugh's drive went into the trap and he bogeyed the hole.

The persistent FitzHugh came back with another birdie on the 10th to cut the lead back to six. The 11th and 12th were halved.

FitzHugh, who won the Northern Virginia Amateur, finished second in the Virginia State. "Another second place," FitzHugh sighed. "I'm getting to be quite a runner-up"