Michael Andretti guided his March-Cosworth to victory in the 200-lap Bosch Grand Prix in Nazareth, Pa. Andretti, who is second to Bobby Rahal in the CART-PPG Indy Car standings, averaged 129.026 mph on the one-mile Pennsylvania International Speedway oval to beat Rahal, in a Lola-Cosworth, by more than a lap.
Ricky Rudd, in a Ford, won his second consecutive NASCAR Delaware 500 title in Dover with a two-second victory over Davey Allison, also in a Ford. Rudd, who averaged a record 124.706 mph on the one-mile Dover Downs International Speedway oval, won $54,550.
RHYTHMIC GYMNASTICS—At the world championships in Varna, Bulgaria, BIANCA PANOVA, 17, of Bulgaria, became the first contestant ever to win all five gold medals in the individual events when she received perfect scores of 10 in the four floor exercises—skipping rope, hoop, clubs and 18-foot-long flowing ribbon—as well as the overall competition.
TENNIS—GABRIELA SABATINI of Argentina, the No. 1 seed, defeated No. 2 seed Manuela Maleeva of Bulgaria 6-4, 7-6 to win the Pan Pacific Open championship and $50,000, in Tokyo.
Unseeded CLAUDIO MEZZADRI of Switzerland won his first Grand Prix event, the Geneva Open, by upsetting his doubles partner, Tomas Smid of Czechoslovakia, 6-4, 7-5, in the finals.
WATERSKIING—At the world championships in Surrey, England, SAMMY DUVALL of the U.S. clinched the men's overall title when he won the jump competition with a meet-record leap of 200 feet. DEENA BRUSH of the U.S. won both the women's jump and overall titles, while compatriots BOB LAPOINT and KIM LASKOFF took the men's and women's slaloms, respectively.
YACHTING—PETER GILMOUR of Australia, a helmsman for Kookaburra III in the America's Cup, beat two-time defending champion Gary Jobson of the U.S. by 3:01 in the deciding race, to win the best-of-three Liberty Cup Regatta for matched 30-foot sloops, 2-1, in New York Harbor.
MILEPOSTS—RETIRED: MANILA, the 4-year-old colt who won the 1986 Eclipse Award as the country's top male turf horse, to stud because of a fractured bone in his left foreleg sustained during a workout at Belmont Park. He won 12 of 18 career starts, including a remarkable 11 of 14 on turf, for earnings of $2,692,799, 10th on the alltime list. This year he won four of five starts, including the Budweiser- Arlington Million, and $868,170 in purses.
TRADED: By the California Angels, lefthanded pitcher JOHN CANDELARIA, 33, to the New York Mets, for two minor league pitchers.