SPLIT, YUGOSLAVIA, AUG. 30 -- The streak is over for Sergei Bubka. After going seven years without losing a major competition, the Soviet pole vaulter finished sixth today in the European track and field championships.

Bubka, the world record holder at 19 feet 10 1/2 inches and 1988 Olympic, world and European champion, was successful on only two of nine vaults as teammate Rodion Gataulin won the event at 19-2 1/4. Bubka could clear only 18-8 1/4 and blamed the loss on a sore back.

"I have to get used to losses after a string of bad results this year," Bubka said. "I had problems with injuries that hampered my usual training schedule, but I will be back. I won't give up that easily."

East German Katrin Krabbe, winner of the women's 100 meters Tuesday, took the 200 today in 21.95 seconds and became the first double gold medal winner in the championships.

Paivi Alfrantti of Finland won the women's javelin with an effort of 222 feet, beating a strong East German contingent led by world record holder Petra Felke, who placed third.

John Regis, third in the men's 100 meters, captured the 200 in 20.11, and Roger Black crossed the line first in the 400 in 45.08 as the powerful British men's team added two gold medals. Linford Christie of Britain, winner of the men's 100, finished third in the 200.

Francesco Panetta of Italy won a dramatic 3,000-meter steeplechase in 8:12.66. The Italian had led from the start, but Mark Rowland of Britain moved ahead on the last lap. Panetta came up with a big final effort and sprinted to victory.

The last men's gold of the day went to Dietmar Haaf of West Germany with a long jump of 27-0 3/4. Monique Ewanje-Epee of France won the women's 100-meter hurdles in 12.79.