Mark Alwin shot a course-record 59 in winning the Middle Atlantic PGA pro-senior tournament at the 5,159-yard Leisure World Golf Course in Montgomery County yesterday. The Eaglehead pro's score was the lowest ever recorded in Washington-area MAPGA events.

Alwin, playing in only his third event this season, had no bogeys and 11 birdies, with five in a row starting on the 10th hole of the par-70 layout designed primarily for retirees. Three strokes back was David Jimenez of Wintergreen, whose 61 had been the record in this 14-year-old event.

Amateur Art Johnson, a member of the winning team in low gross, made a hole in one using a six-wood on the 200-yard seventh hole--a par 4.

Brian Lehnhard and Tim Vigotsky of Evergreen each shot one over par 143 for 36 holes to lead 18 qualifiers at Reston South for the Virginia State Golf Association Amateur Championship June 30-July 4 at Blacksburg Country Club.

Lehnhard shot 73-70 and Vigotsky 70-73, followed by Charles Brown of Reston South, 144, and Gill FitzHugh of Army Navy, 145.

Peter Nadanyi of International led 14 junior qualifiers in the same field for the Virginia Junior, to be played July 26-28 at Kinderton Country Club in Clarksville.

Jon Lesage of Congressional shot two-over-par 74 to win the medal in the 16-17 age bracket in qualifying for the Montgomery Sentinel junior tournament at Redgate. Two rounds of match play are today, the semifinals and finals Wednesday.