Wayne DeFrancesco missed only three of 31 pint-sized greens at Kenwood and turned back Robert Black, 6 and 5, for the District of Columbia Golf Association Amateur championship yesterday.

"I hit my driver better than I've ever hit it in my life," said the 20-year-old junior-to-be at Louisiana State who lives in McLean. He might have added that his iron play was not too shabby. his crisply-struck approach shots put him close to enough flagsticks for nine birdies.

The last seven holes of the match were won with birdies.

Black, 19, 6-foot-5 blond bomber from Army Navy who plays on the University of Florida golf team, pulled a Houdini-like escape from 4-down to beat Maryland Open champ Gary Marlowe on Saturday.

But there was no extrication from the 2-up hammerlock that the strongwilled, deliberate DeFrancesco had on him after the morning 18 holes.

"They say I'm slow and deliberate," said DeFrancesco, who plays at Pinecrest and Lakewood. "I just take my time trying to get lined up," said the former Metro Schoolboy titlist and Washington-area junior of the year.

"They both have the temperament for it," said Black's father, two, handicapper Marine Lt. Col. Robert Black Sr., who moved his family to Vienna two years ago from Hawaii.

"One forces the other to hit the good shot, and that's the way to do it," he added.

In the afternoon, DeFrancesco went 3-up with a 20-foot birdie putt on the difficult downhill par-4 fourth.

The birdie party started on the par-5 seventh. Black puled within two with a fine long explosion shot from the green-guarding bunker and sank a four-foot birdie putt.

DeFrancesco's precision reached its pinnacle with birdies on the next four holes and a 6-up lead. Every shot went straight and true except for a half-topped iron second shot on the par-5 ninth. But he made up for that by chipping stiff to the hole for an easy two-foot birdie putt.

Black countered with a 15-foot birdie on the 12th but DeFrancesco ended the match with another straight-as-a-string iron shot on the par-3 13th. He sank the 15-foot birdie putt for the victory.