BOATING—TOM D'EATH, driving Miss Budweiser, won the Gold Cup, unlimited hydroplane racing's oldest and most prestigious trophy, by completing six laps of the 2�-mile Mission Bay course off San Diego at an average speed of 124.593 mph. George Woods Jr., in Oh Boy! Oberto, finished second with an average speed of 123.983 mph. D'Eath's victory ended Chip Hanauer's Gold Cup winning streak at seven. Hanauer, driving Circus Circus, placed sixth.
BOXING—MARLON STARLING won a unanimous 12-round decision over Chung Young Kil to retain his WBC welterweight title, in Hartford.
EQUESTRIAN—BEEZIE PATTON of Milford, Mich., guided Northern Magic to victory in the American Gold Cup, in Devon, Pa., the third event in show jumping's Triple Crown. Patton's time of 37.860 seconds in the final round was 1.490 faster than that of Margie Goldstein of Miami, on Daydream. The victory was worth $22,500.
PRO FOOTBALL—In a week of comebacks and big passing games in the NFL, Joe Montana of the 49ers ran four yards for a touchdown with 40 seconds left, to salvage a 20-16 victory over the Buccaneers. The Raiders, who lost to the Chiefs 24-19, self-destructed in the fourth quarter when penalties cost them 65 yards, and Jay Schroeder was sacked twice. Jim McMahon had the best passing day of his career, throwing for 389 yards for the Chargers, but the Oilers intercepted him three times en route to a 34-27 victory. The Packers rallied from a 24-7 half-time deficit and scored with 1:26 left on Don Majkowski's three-yard pass to squeeze past the Saints 35-34. Bernie Kosar threw three touchdown passes as the Browns beat the Jets 38-24; Cleveland intercepted New York's Ken O'Brien four times. Jim Everett connected with Henry Ellard on scoring throws of 29,17 and six yards to lead the Rams past the Colts 31-17. Troy Aikman jump-started the Cowboys with a 65-yard scoring pass to Michael Irvin, but Chris Miller, who passed for 255 yards, led the Falcons to a 27-21 comeback victory that dropped Dallas's record to 0-2 for the first time since 1963. The Dolphins sacked Tony Eason seven times while defeating the Patriots 24-10; three TD passes by Miami's Dan Marino gave him 200 in his 89 games in the NFL. Johnny Unitas, the next quickest to reach 200, did it in 121 games. In other action: The Bears overwhelmed the Vikings 38-7; the Cardinals beat the Seahawks 34-24; the Bengals routed the Steelers 41-10; the Giants overcame the Lions 24-14; and the Eagles rallied to beat the Redskins 42-37 (page 16).
GOLF—BLAINE McCALLISTER birdied the last two holes to defeat Brad Faxon by one stroke in a PGA event in Sutton, Mass. McCallister, who shot a 13-under-par 271, earned $126,000.
Beth Daniel shot a 15-under-par 273 to defeat Cindy Rarick by six strokes and win a women's tour event and $45,000 in Kent, Wash.
HARNESS RACING—MATT'S SCOOTER ($3.20), driven by Mike Lachance, finished 2� lengths ahead of Camtastic to win the Breeders Crown for Aged Pacing Horses, at Freehold Raceway. The 4-year-old covered the mile in a track-record 1:53[2/5] and earned $139,119.
HORSE RACING—EASY GOER ($2.60), ridden by Pat Day, charged past four horses in the final quarter mile to win the Woodward Handicap by two lengths over Its Acedemic. Easy Goer, the only 3-year-old in the field, ran the 1� miles in 2:01 for his fourth straight stakes victory. The winner's purse was $485,400.
Senor Pete ($14.20), ridden by Jose Santos, defeated Adjudicating by two lengths to win the Futurity Stakes, for 2-year-olds, at Belmont Park. The victorious colt finished the seven furlongs in 1:23[1/5] to earn $75,360.
River Memories ($20.80), Pat Day up, won the Flower Bowl Handicap, at Belmont Park, covering the 1� miles in 2:06[4/5] to upset Capades by 1� lengths. The 5-year-old mare won $74,880.