The Soviet Union has fired several top coaches and dropped athletes from its national track team because of disappointing performances, according to the newspaper Sovietsky Sport in Moscow.

The senior triple jump coach and five other national team trainers were sacked for "poor work in getting athletes ready and making best selection" for last month's World Championships in Helsinki and the European Cup final in London, the paper said.

It also listed seven athletes dropped from the national team for what it said were poor performances and "moral breaches of sports discipline."

The seven included Viktor Bryzgin and Andrei Prokofiev, who won bronze medals in the 4x100 meters relay at the Helsinki world championships. Prokofiev also won an Olympic sprint relay gold medal at the 1980 Moscow games.

Triple jumper Gennady Valiukevic, long jumper Sergei Rodin and 20-kilometer walker Petr Pochinchuk were also on the list.

The Soviet Union finished third in the World Championship gold medal standings behind East Germany and the United States, and second in the European Cup final behind East Germany . . .

In Jarrow, England, British 5,000-meter world record-holder Dave Moorcroft braved a near gale-force wind and driving rain to win his comeback race. The 30-year-old Coventry star, sidelined all season with hepatitis and then a stress fracture in a foot, won an invitational 3,000-meter race in 8 minutes 10.22 seconds, more than 30 seconds outside his personal best for the distance.