Tyley Blue sank a two-foot par putt on the 18th green yesterday to defeat Webb Heintzelman and capture the 46th annual Metropolitan Schoolboy Golf Championship at Columbia Country Club.

Blue, of Garrison, Md., led, 2 up, after 14 holes. But a loss-of-hole penalty against Blue on the 15th and a Heintzelman per on 16 evened the match. Each golfer bogeyed 17.

Heintzelman was erratic off the tee throughout and the 18th proved to be another costly example. His tee shot on the 412-yard hole caught the left rough.

Blue's tee shot was down the middle. He followed with a seven-iron shot to the right side of the green, leaving him a 45-foot birdie putt.

Heintzelman used a four-iron to play out of the rough. But the low shot failed to carry and left him considerably short of the green. He chipped up to 16 feet.

Blue's birdie putt rolled just two feet beyond the hole. Heintzelman's par putt lipped out on the left side. Blue then sank his short putt for the prestigious title.

"In match play, the only person you have to beat is yourself," said Blue, who will attend the University of Virginia in the fall. "I really had to calm down on the 18th tee. I blew a good opportunity on the 17th.

"I hit a picture-perfect drive on the 18th," continued Blue, whose great-grandfather designed the famous course at Oakmont [Pa.] Country Club. "I think I got him thinking on that. He's a good player. Both of us had off days."

"I thought I hit a pretty good putt on 18," said Heintzelman, a senior this fall at Whitman High. "It hit about one-fourth of the cup and just jumped out."

Blue never trailed in the match, which was played under thundering skies, four holes under steady rain. Blue, a 5-foot-9, 155-pounder, parred the opening hole to move ahead and used aother par on the fourth to go 2 up.

Heintzelman cut the margin to one with a par 5 on the 539-yard fifth hole, then Blue moved to his biggest lead of the match, 3 up, with a bogey-par combination on holes six and seven.

Heintzelman birdied the eighth by holding out a 24-foot chip shot from the right rough and birdied the ninth hole on a five-foot putt to narrow his deficit at the turn at one.

Heintzelman, the Maryland public school champion in 1877, evened the match on the 11th with a par. But Blue regained the lead on the 12th when he sank a three-fot par putt. Blue made a two-foot putt for par on the 13th and moved to 2 up.

Both golfers hit perfect tee shots on 15, and "heintzelman was away obly by a few feet. His second shot landed pin high on the fringe. After Heintzelman put his club back into his bag, Blue picked up Heintzelman's bag and looked inside to find which club his opponent had used.

Heintzelman quickly pointed out Blue's action to the official, who ruled that the infraction would cost Blue the loss of the hole.

Heintzelman, who beat his older brother Wade for the club championship at Washington last year, needed four shots to reach the 17th green, but his excellent chip shot and fivefoot putt enabled him to make a bogey. Blue's second shot carried over the green and his chip back rolled 18 feet past the pin. He two-putted, leaving the 18th hole to decide the match.