Former Frederick pro Donnie Hammond was deprived of one of his better PGA Tour showings when he was assessed a two-stroke penalty for hitting his playing companion's ball on Congressional's 15th hole yesterday.

Hammond took double-bogey 7 on the hole instead of a probable birdie and ended with 76 -- 289, tied for 20th, winning $5,043. His best finish in three years on tour was a tie for 10th at Houston for $13,000 two months ago.

On the 15th, a par 5, Hammond and Doug Tewell each drove into the fairway. Tewell then hit what he thought was his ball for his second shot. Hammond, hitting what he thought was his ball, stroked his second shot up close to the green.

Hammond chipped his third shot within a foot of the hole. When he marked his ball, he discovered that the ball had a No. 2 on it, instead of the No. 1 he hit off the tee. He immediately told Tewell and the two had to go back to approximately where their tee shots landed. Each took a two-stroke penalty and played from there.

"When I told Tewell, he didn't like it too much either," Hammond said. Tewell made triple-bogey 8 on the hole in a round of 80. "I feel kind of stupid, it was kind of a dumb thing to do," said Hammond, who went into the final round seven shots off the lead.

He went four under par with a birdie at the 10th hole to move into position for a big check, but double-bogeyed the 14th hole, the penalty-affected 15th and the final hole.

"It's something I won't forget for a long time," Hammond said.

Corey Pavin, who tied for second with Larry Mize after shooting 69 -- 279, is surging. Pavin broke records in winning the Colonial for his second PGA Tour victory two weeks ago, then tied for fourth in the Memorial last week, and won $44,000 in the Kemper.

That gives him $157,000 in three weeks and builds his 1985 earnings to more than $272,000.

"Nine under at Congressional, I'm really pleased with that score," Pavin said. "I really didn't play real solidly today."

Kemper champion Bill Glasson is scheduled to be among 88 golfers shooting for 32 spots in 36-hole sectional U.S. Open qualifying today at Bethesda Country Club. Glasson tees off at 8:04 a.m.

Mize is also entered (8:46 a.m.), along with Hammond (9:29) and fellow Kemper players Nick Price and Dan Pohl (9:20), Ronnie Black (8:12) and George Burns (8:38).

A Kemper single-day attendance record of approximately 34,000 was set during Saturday's third round, according to Labron Harris, the tournament's executive director. The Sunday attendance was estimated at 28,000.

Harris said Friday's rain kept overall attendance about 2,000 below last year's record 102,000.

Bob Lohr is far and away the leading rookie on the PGA Tour this year, with $74,300 earned. Here, his 73 -- 294 won $1,115.

The slender long hitter has made five straight cuts.

"I've played real well," Lohr said. "It takes a lot of pressure off. I'll be in the top 125 earners (and thus automatically retain his playing card) for next year."

Tony DeLuca of Vienna, the only Washington-area player to make the cut, closed with 71 -- 295 and won $1,055.