ZURICH, AUG. 19 -- Canadian Ben Johnson ran the 100-meter dash in less than 10 seconds for the third time in five races today, capturing first place at the Weltklasse Grand Prix track and field meet in 9.97 seconds.

Johnson, 25, has averaged 9.975 for his last five outings. Calvin Smith of the United States was second in 10.07, the fastest he has run since setting the world record of 9.93 in 1983. Smith won the 200 in 20.10.

Also today, Kenyan Billy Konchellah ran the fastest 800 in the world this year, 1 minute 43.39 seconds. Louise Ritter was denied a U.S. high jump record by a breeze that brought down the bar three seconds after she easily cleared 6 feet 8 1/4 inches. Ritter still finished first, clearing 6-7 to tie her own U.S. record.

American Evelyn Ashford, hampered by a hamstring injury, pulled up 15 meters from the finish of her 100 heat today.

Meanwhile, Res Bruegger, chief organizer of the meet, announced at a news conference today that all throwing events will be dropped starting next year unless year-round random drug testing is instituted. "It's obvious athletes are taking forbidden drugs and the IAAF {International Amateur Athletic Federation} is not exerting enough control," he said.