Lois Ledbetter of Rockville keeps knocking on the door, but she is having a hard time winning her first major women's amateur tournament. Ledbetter, who recently graduated from the University of Alabama, where she was top player on the women's team, recently lost in the final of the Women's Southern Amateur to Virginia Derby of York, Ala., and Auburn University, 1 up, in 37 holes, at Indigo Lakes in Daytona Beach, Fla.

Ledbetter, who lost in the final of the Women's Western Amateur last year, was medalist in the Southern, shooting a 5-under-par 67 in qualifying. Ledbetter, 23, who plays out of Lakewood Country Club, won the Bear Bryant student-athlete-of-the-year award this year at Alabama. She was a three-time academic all-America.

She is scheduled to play in the Women's Eastern Amateur June 9-11 in Charlottesville, and in several other events, before making up her mind about her future.

Marty West of Rockville will be shooting for his eighth Maryland Amateur title on his home Columbia Country Club course, June 11-14. West's golf accomplishments also include victories in three Maryland Opens, two Belle Haven Four Ball events and the Middle Atlantic Amateur. He has played in the U.S. Open, the Masters and the Walker Cup. As reigning Maryland Open champion, he also is in the field for the Kemper Open, which starts today.

Buddy Peoples of Crofton is defending Maryland Amateur champion.

Washington's Lee Elder was deprived of his first Senior PGA Tour victory of the year when Chi Chi Rodriguez shot a final-round 63 to beat him by a stroke to win the recent United Hospital Seniors tournament in Malvern, Pa. Rodriguez, who said at last fall's Chrysler Cup in Potomac that he was playing the best golf of his life, set a seniors tour record with eight straight birdies the following week and tied a seniors record by winning his third straight tournament, the Silver Pages Classic in Oklahoma City.

Rodriguez is leading the seniors' money-winning list with more than $212,000. Elder, who earned more than $1 million on the regular tour, has had five top 10 finishes and has earned about $60,000 in his third year on the over-50 tour.

Fred Funk, Glen Barrett and Brad Schiefelbein will be among Middle Atlantic PGA pros participating in a celebrity pro-am and clinic at Paint Branch June 13. Admission will be free with a ticket obtained beforehand; it will be $3 the day of the event. All proceeds will go to United Way charities. The event will feature media personalities and members of the Washington Capitals and Redskins.

The 65th Washington Metropolitan Golf Association Junior, the nation's second-oldest junior event, will be held at Chantilly Aug. 3-5 . . . Rodney Lathern of Bladensburg High School helped South Carolina State win the Black College National Golf Championship recently in Cleveland. Lathern finished 10th . . . The Harden and Weaver tournament will be held June 11-12 at Montgomery Village . . . The Women's District Golf Association championship will be held June 15-19 at Bretton Woods.