Undated (AP) _ The highlight here will be the men's singles sculls where Pertti Karppinen of Finland will be trying for a record fourth Olympic gold medal and will be challenged by archrival Peter-Michael Kolbe, the four-time world champion from West Germany. But don't be surprised if Thomas Lange of East Germany, who won the world championship last year, beats them both. There will be another stirring duel in the men's pairs where Andrew Holmes and Steven Redgrave of Great Britain will tangle with Giuseppe and Carmine Abbagnale, the brother team from Italy. West Germany and the United States look like the best of the men's eights.

Bulgaria, Romanian and East Germany should dominate the women's events. SHOOTING

Thirteen gold medals will be awarded in shooting - seven in men's events, four in women's and two in mixed events. The United States will send two world-record holders to Seoul - Matt Dryke in skeeting shooting and Dan Carlisle in trap shooting. They will face strong competition from the USSR and Italy. Ralf Schulman of East Germany headlines the pistol events and Kirill Ivanov of the Soviet Union and Petr Kurka of Czechoslovakia are favorites in the prone and three-position small-bore events. Vessela Letcheva and Eva Joo of Hungary are the top among the women. SOCCER

There are four, four-team groups in Olympic soccer and the top two teams in each group advance to the next round. Don't look for the United States to make it out of a group that includes the Soviet Union, Argentina and South Korea. Brazil, Italy, West Germany and the Soviet Union will likely divide the three medals between them. SYNCHRONIZED SWIMMING

This was first a medal sport in the 1984 Games and the results this year should be the same - the United States and Canada fighting it out for the gold in both the singles and pairs events. The solo event will feature 1984 champion Tracie Ruiz-Conforto of the United States and Carolyn Waldo of Canada. Waldo and Michelle Cameron will battle for the pairs gold with Sarah and Karen Josephson, identical twins from the United States. Japan, Great Britain and Poland will fight for the bronze medal in the pairs event. TABLE TENNIS

This is the first time that table tennis is an official Olympic sport and spectators who give it a look will see two of the great athletes in the world - Jiang Jialiang of China and Jan-Ove Waldner of Sweden. They are the top two players in the world and will likely battle for the men's singles gold. Yoo Nam Kyu of South Korea, who beat Jiang in the 1986 Asian Games, is also a contender. China, Sweden and South Korea should finish in that order in the men's doubles.

He Zhili, Dai Lili and Jiao Zhimin of China will likely battle for the women's gold with Yang Young-ja of South Korea challenging. The Korean team upset the Chinese at the Asian Games and could do it again at Seoul. WATER POLO

Twelve teams will slosh through the pools at Seoul in pursuit of the gold medal with Yugoslavia and the Soviet Union considered the co-favorites. Spain and Hungary also have tough teams, but the fourth-seeded U.S. squad could surprise. Terry Schroeder, Jody Campbell and goalie Craig Wilson return from the U.S. squad that won the silver medal in the 1984 games. That team fought Yugoslavia to a 5-5 tie in the finals but lost the gold medal based on goal differential. Wilson is generally regarded as the best goalie in the world. WEIGHTLIFTING

This event begins and ends with Bulgaria. Denied a chance to compete in the 1984 Games by the Soviet-led boycott, Bulgaria comes back with a lineup in the 10 weight categories that has no weaknesses, beginning with Sevdalin Marinov in the 114 3/4 -pound class and ending with superheavyweig ht Antonio Krastev. The Soviets also have a strong team led by Anatoli Khrapaty in the 198 1/4 -pound class and 242 1/2 -pounder Yuri Zakharevich.

Turkey has never won a medal in weightlifting, but it could get three golds in Seoul thanks to Naim Suleymanoglu, who defected from Bulgaria. YACHTING

The United States won three golds and four silvers in the seven yachting events in 1984 and it should have the strongest team again in Seoul. Competition in the Finn class will come from Denmark and Spain. The Flying Dutchman class is usually dominated by the Europeans, but the United States won the gold in 1984 and New Zealand should also contend. The favorite in the Tornado class is New Zealand and Robert Nagy of France is the man to watch on sailboards.

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