Peter Jacobsen shot a course-record 62 at Argyle Country Club yesterday afternoon and coupling it with a morning 70 at Manor, the 26-year-old touring pro who missed the cut at the Kemper Open last week won the U.S. Open sectional qualifying medal.

Each player in the field of 57 played both golf courses and another tour regular, D.A. Weibring, with 69 at Argyle and 65 at Manor, was runner-up by two strokes to Jacobsen, who shaved 10 shots from Argyle's par. Joe Rassett, 21, an Oral Roberts University senior, was leading amateur with a 138 total.

A group of 13 qualified for for the Open, June 12-15 at Baltusrol Golf Club, Springfield, N.J. The cutoff was 144 and nine players at that figure contested for the last two spots. The playoff lasted more than three hours and was called by darkness.

Scott Simpson, penalized two strokes at day's start for being late, and Kevin King, a North Carolina pro, battled for 12 holes at one over par for the 14th spot until darkness dictated they resume today. Mark Rohde, a pro on the satellite tour, was luckier. He made birdie on the first playoff hole and qualified for the 13th spot.

Marty West, Columbia Country Club amateur, bogeyed the first playoff hole and was eliminated. Clubmate Henrie deLozier lost out on the third hole.

The name pros who failed to qualify included Orville Moody, the 1969 Open champion. Moody carded 73 at Manor in the morning but chronic hay fever, which forced him to withdraw from the Kemper, made him quit before trying Argyle.

Jacobsen posted five birdies on the front nine at Argyle, which he played in the afternoon, and three birdies and an eagle on the back for his record 62.

"It seems I was always hitting a 10-foot putt," he said. "I had 10-footers for birdies on the first and second holes and just under 10 feet at the fourth. I had another 10-footer at the sixth and almost holed out with a wedge on the ninth."

Jacobsen continued his streak on the back nine with putts of eight feet on the 12th, 15 on the 16th, and 13 on the 17th. He capped his round on the 18th with a drive, eight-iron and 25-foot putt.

Jacobsen earned $40,000 on the tour this year.