Dave King of Bethesda and Prince Georges withstood charges by Washingtonian's Randy Morris on the back nines of both the morning and afternoon rounds and emerged with a 2 and 1 victory in the District Amateur golf championship yesterday at Argyle Country Club.

King had lost in the final in 1977 to Gary Mankulish and last year to Wayne DeFrancesco.

King has beaten some of the area's top amateurs this week.

In the quarterfinals he defeated Gary Marlowe with a birdie on the first extra hole, in the semifinals he birdied the 19th hole again and eliminated medalist Eddie Offterdinger, and yesterday he defeated Morris, a former PGA Tour pro.

To open the afternoon round, King chipped into the cup on the first hole (the 19th) to even the match. On the par-5 next hole, King was six feet off the green in three shots, For his next shot he selected a putter where others might have chipped, and made his second straight birdie to take a 1-up lead.

After the match teetered back and forth on the front nine, King took a 2-up lead at the ninth, or 27th, hole when he hit his approach shot three feet from the hole and sank the putt.

But Morris birdied the par-5 12th hole to pull within one hole. On the par-3 13th, Morris hit a long iron tee shot that stopped three feet short of the hole. He knocked in the putt to square the match.

King quickly regained the lead by sinking a five-foot birdie putt at the next hole.

Morris fell 2 down at the long par-4 16th when he hit his second shot short of the green, chipped up and missed a 12-foot putt, and King chipped up and sank a four-footer.

The match ended on the par-3 17th hole, where both players made pars. Morris's 20-foot birdie putt stopped two inches from the cup.