Lois Ledbetter of Rockville, the qualifying medalist, and Brenda Seymour of Chantilly, the 1985 champion, easily won in yesterday's quarterfinals of the Women's District Golf Association championships at Bretton Woods.

Seymour was 1 under par and beat Carlene Cassidy of Manor, 7 and 6. Ledbetter played "steady" 3-over-par golf and eliminated Shawn McCullough of Woodlawn, 6 and 5.

That sets up a semifinal match between the two, starting at 10:18 this morning, followed by WRC Cup winner Judi Enright of Army Navy against former WDGA winner Karen Jones of Argyle.

Enright edged Arlene English of Congressional, 1 up, in her quarterfinal, and Jones bested Sharon Briggs of Montgomery Village, 5 and 3.

Ledbetter, 23, of Lakewood Country Club, just graduated magna cum laude in corporate finance and Spanish at the University of Alabama, where she played No. 1 on the women's team. She was medalist and runner-up in the recent women's Southern Amateur, and runner-up in last year's Western Amateur.

Yesterday she said she "did not play great, but I played steady. She {Seymour} is a good player. It's going to be a good match."

Seymour, of Hidden Creek, who won this tournament two years ago, got her second birdie of the match at the ninth hole for a 6-up lead. She said she hit her driver and irons "very well, but my putting was not superb."

King Out Indefinitely

Associated Press

HERSHEY, Pa., June 17 -- Betsy King, the leading money winner on the LPGA tour, withdrew today from this week's Lady Keystone Open and will be sidelined indefinitely. She sprained her left foot at her nearby Lime Kiln, Pa., home.

King, whose 1987 earnings total $302,806, was forced to withdraw from the pro-am event of the Lady Keystone Open and the 54-hole LPGA tournament that will start Friday in Hershey.

She was hurt at the home of her parents. Her mother, Mrs. Wier King, reported that X-rays taken today showed no break, but said her daughter's foot was put in a splint and packed in ice.

King said her daughter was injured while "just horsing around" with some of the other tour players who were visiting the King home.

Betsy King has won three tournaments this year, including the recent McDonald's Championship, which enabled her to move to the top of the money-winners' list.