Dragutin Topic of Yugoslavia set a world junior high jump record of 7 feet 9 1/4 inches Sunday, highlighting the final day of the third World Junior Track and Field Championships, in Plovdiv, Bulgaria.
Topic added one-half inch to the record set in 1986 by Cuba's Javier Sotomayor, who holds the world record of eight feet.
The United States won both men's relays with Chris Nelloms of Dayton, Ohio, participating in both to increase his gold medal count to three for the championships. Nelloms ran the first leg for the U.S. team which won the 400-meter relay in a meet record 39.13 seconds, .13 off the world junior record. Reggie Harris, Rodney Bridges and James Stallworth carried the baton the rest of the way.
Nelloms then anchored the 1,600-meter relay team to victory in 3:02.26. Harris, Tony Samuels and Derek Mills ran the earlier legs.
Nelloms' other gold came in the open 400, which he won in a meet-record 45.43.
Jamaica won the women's 400-meter relay in 43.82 and was second to Australia in the 1,600-meter relay. Australia won the event in 3:30.38 to Jamaica's 3:31.09.
Six meet records were set, increasing to 20 the number set in 41 events over three days. Previous meets had been held at Athens in 1986 and Sudbury, Canada, in 1988.
Also on Sunday, Sergei Bykov of the Soviet Union jumped 55-8 1/2 inches to win the triple jump, Mathew Birer ran a 8:31.02 in the 3,000-meter steeplechase and Moses Kiptani of Kenya won the men's 1,500 in 3:38.32.
Susan Feitor of Portugal set the only women's mark of the day with a 21:44.30 performance in the women's 5-kilometer walk.
The Soviet Union ended the championship with eight individual gold medals and 15 overall, followed by the U.S. and Kenya with four golds each.
Athletes born in 1971 or later are eligible to compete in junior meets.
Leroy Burrell of the United States won the 100 meters in 10.11 seconds at the Adriaan Paulen track and field meet in Hengelo, Netherlands.
Other American winners at the IAAF meet were Johnny Gray, who ran the 800 meters in 1:44.65 seconds and Cletus Clarke, who ran the 110-meter hurdles in 13.72.
American Mike Powell won the long jump with 26-5 3/4 inches.
Peter Koech of Kenya ran this season's best time in the 3,000-meter steeplechase, winning in 8:10.95.
Philippe Tourret of France upset a top field in the men's 110-meter hurdles to highlight the fourth international track and field meet at Fontvieille, Monaco.
Meanwhile, Roberto Hernandez of Cuba broke the stadium record in the 400, finishing in 44.30 seconds to beat Olympic relay gold medalists Danny Everett and Butch Reynolds.
Tourret was the surprise of the evening, winning in 13.28. He defeated some of the world's best hurdlers, such as world record-holder Roger Kingdom, who finished fifth in 13:57, and Tony Dees, the top American this year, who was third behind Arthur Blake.
"I was really feeling good," said Tourret, whose previous best was 13.34. "I knew (Greg) Foster was going to make us do a second start, so it wasn't a surprise, and it didn't make me lose my concentration."
Americans Randy Barnes and Jim Doehring finished 1-2 in the shot put. Barnes' put of 70-5 inches was far off his world record of 75-10 1/4. Doehring's best was 70-3 3/4.