Clancy Edwards established himself as the premier sprinter in the world yesterday as he easily won the 200-meter dash at the AAU national championships at UCLA.

Edwards, a Southern California senior, won the 100 meters Friday, and last week won the 100 and 200 meters at the NCAA championships.

With his victory yesterday, Edwards becomes the first runner to win both the 100 and 200 in the NCAA's and the AAU's in the same year since Hal Davis in 1943.

Edwards' time was 20.25. He already had the best time in the world this year with a 20.03 clocking and he also had the world's leading time of 1978 in the 100.

"I feel now that I am the best sprinter in the world, at least in the 200 meters," Edwards said.

Yesterday's 200 was typical Edwards, except for one thing - he got a good start.

Running in lane two, Edwards had what he called "my best start in years." He ran the turn smoothly but was in fifth place behind leader James Sanford with 60 meters to go.

Then Edwards shifted gears and easily moved ahead of the field. James Gilkes made his move with Edwards but finished a distant second in 020.46.

Edwards is not a classic runner. He is a muscular 180 pounds and he runs with a choppy, stiff-legged style.

"Most people criticize my running style but I'm doing great with it," he said. "They have tried to work on my start and they have tried to get me to run smoother, but nothing has worked. They gave up after awhile and just let me run."

The first two finishers in each event her qualify for the U.S.A.-USSR dual meet next month in Berkeley, Calif. A number of the winners, Edwards included, have not committed themselves to that meet, however.

Sherry Calvert became only the third American woman to throw the javelin more than 200 feet when she upset Kathy Schmidt with a throw of 202-7. Schmidt had wont the event the last five yards.

There were two American records set in the women's competition. Brenda Morehead of Tennessee State blazed to a 22.60 clocking in a 200 meters semifinal heat and Jodi Foster uncorked a 22-7 1/2 long jump. That is also the best in the world this year.

Evelyn Ashford came back to defeat Morehead in the final, however, in 22.66.

Delano Meriwether and Cliff Wiley of D.C. International were eliminated in the men's 200-meter semifinals. Another D.C. International competitor, June Smith, ran 58.62 to finish third in the women's 400-meter intermediate hurdles. Debbie Esser of Iowa State won the event in 57.85.

In a thrilling men's 1,500-meter final, defending champion Steve Scott of University of California at Irvine nipped South Africa's Sidney Marie in 3:38.83.

In a relatively slow-paced race, five runners were bunched near the front going into the last 200 meters. Scott made his move and Marie stayed on his shoulder. Marie, running for the Philadelphia Pioneers, moved a half stride ahead with 50 meters to go, but Scott nipped him at the tape.

Maurice Peoples, also competing for D.C. International, finished second to Maxie Parks in the men's 400-meter dash.

Parks ran 45.15 to Peoples' 45.22.

"I lost my concentration or I would have had him," Peoples said. "I relaxed going into the turn and he (Parks) picked me up and then I got tight and started forcing and couldn't catch him.

Technique-wise it was a poor last 110 for me or I could have won. I'm happy, but I could be happier. I've run only five races all year and I need at least eight to reach my peak."

Dan Ripley upset Mike Tully in the pole vault with a jump of 18-3. Tully made 18-0.