ARENA FOOTBALL—The DENVER DYNAMITE won Arena Bowl '87 by routing the Pittsburgh Gladiators 45-16 before 12,232 in Pittsburgh. Denver quarterback Whit Taylor threw four touchdown passes, including three to wide receiver Gary Mullen, the game's MVP.
BOXING—WBC and WBA titleholder MIKE TYSON claimed the undisputed heavyweight crown with a 12-round unanimous decision over IBF champ Tony Tucker, in Las Vegas (page 20).
Brian Mitchell of South Africa successfully defended his WBA junior lightweight title with a 14th-round TKO of Francisco (Rocky) Fernandez of Panama, in Panama City.
Antonio Esparragoza of Venezuela retained the WBA featherweight championship with a 10th-round KO of Pascual Aranda of the United States, in Houston.
DIVING—At the U.S. outdoor championships in Bartlesville, Okla., which determined the qualifiers for the Pan American Games team, GREG LOUGANIS raised his string of national titles to 43 with victories in the 10-meter platform and the 3-meter springboard, MARY ELLEN CLARK upset defending champion Michele Mitchell to win the women's 10-meter platform and KELLY McCORMICK won the women's 3-meter springboard.
GOLF—LAURA DAVIES shot a one-under-par 71 to defeat Ayako Okamoto and JoAnne Carner in an 18-hole playoff and win the U.S. Women's Open and $55,000, in Plainfield, N.J. (page 66).
Curtis Strange earned the $130,328 first prize at the PGA St. Jude Classic in Memphis, shooting a final-round three-under-par 69 for a 72-hole total of 275, 13 under par. Strange finished one stroke in front of four competitors.
Chris Johnson won the LPGA Columbia Savings Pro-Am and $37,500 in Englewood, Colo., by shooting a final-round two-under-par 70 for a 72-hole 277, 11 under par. She beat Shirley Furlong by five strokes.
Alison Nicholas won the Ladies' British Open, at St. Mellion, shooting a final-round even-par 73 for a 72-hole total of 296, four over par. She defeated Laura Davies and Muffin Spencer-Devlin by one stroke to claim the $24,000 winner's check.
HORSE RACING—BET TWICE ($4.60), with Craig Perret up, won the Haskell Invitational Handicap for 3-year-olds at Monmouth Park by a neck over Alysheba. Bet Twice covered 1‚Äö√Ñ√∂‚àö√±‚àö¬µ miles in a stakes-record-tying 1:47 to earn a $300,000 winner's purse and increase his career earnings to more than $2.6 million (page 36).
Theatrical ($2.80), a 5-year-old ridden by Pat Day, was declared the winner of the Sword Dancer Handicap at Belmont Park and awarded the $133,080 winner's purse after first-place finisher Dance of Life, with Randy Romero up, was disqualified for interference. Theatrical covered 1½ miles in 2:26.
MOTOR SPORTS—In the fastest 500-mile Indy Car race ever, MICHAEL ANDRETTI in a March-Cosworth won the CART Marlboro 500 in Brooklyn, Mich., by 9.11 seconds over Al Unser, also in a March-Cosworth. Andretti, who earned a $121,830 first prize, averaged 171.490 mph on the two-mile Michigan International Speedway oval, surpassing Bobby Rahal's record, set at the 1986 Indianapolis 500, by .769 of a second. He completed the 250 laps in 2:48:16.07.
SWIMMING—In Clovis, Calif., JANET EVANS, 15, established world records in the 800-meter freestyle (8:22.44) and 1,500-meter freestyle (16:00.73) and also won the 400-freestyle (4:08.89) and 400-meter IM (4:41.74) to become the first swimmer to win four events at the U.S. Long Course National championships since Tracy Caulkins in 1981 (page 28).
TENNIS—IVAN LENDL of Czechoslovakia collected the $39,440 first prize at the D.C. Classic in Washington by defeating Brad Gilbert of the United States 6-1, 6-0.
Steffi Graf defeated Chris Evert 6-2, 6-1, then teamed with Claudia Kohde-Kilsch to beat Evert and Pam Shriver 1-6, 7-5, 6-4 in the decisive doubles match as West Germany defeated the U.S. 2-1 and won its first Federation Cup championship, in West Vancouver, B.C.
Kevin Curren of the U.S. upset Pat Cash of Australia 6-4, 5-7, 6-4 to win the Hartmarx Classic and $12,500, in Newport Beach, Calif.
Joakim Nystrom of Sweden defeated compatriot Stefan Edberg 4-6, 6-0, 6-3 to win the Swedish Open and $35,000, in Bastad.
MILEPOSTS—ACHIEVED: By jockey ANGEL CORDERO JR., his 6,000th career win, aboard Lost Kitty at Monmouth Park. Cordero joins Bill Shoemaker, Laffit Pincay Jr. and Johnny Longden as the only jockeys in U.S. racing history to top the 6,000 mark.
ANNOUNCED: By the NCAA, sanctions against the men's basketball program at LOUISIANA STATE, for various infractions including the sale of complimentary tickets by an athlete to a booster and the arrangement of a car loan by a booster for an athlete. The team will be limited to 13 grants-in-aid for the 1987-88 academic year. LSU also was prohibited from signing any recruits to letters of intent this spring.
FIRED: Eastern Washington University basketball coach JOE FOLDA, 42, after he admitted violating NCAA rules in recruiting two former players, junior swingman Orville Butler of Los Angeles and junior point guard Troy Mackey of New York City in the summer of 1986. Both Butler and Mackey dropped out of EWU last year. Folda guided the Eagles to a 42-42 record in three seasons.
RETIRED: After 12 seasons with the Denver Broncos, cornerback LOUIS WRIGHT, 34, a five-time All-Pro and a member of the Broncos' 1978 and '87 Super Bowl teams.
SENTENCED: To two years in prison and a $15,000 fine, Green Bay Packer defensive back MOSSY CADE, 25, on two counts of second-degree sexual assault, in Brown County (Wis.) Circuit Court.
TRADED: By the Cleveland Indians, lefthanded pitcher STEVE CARLTON, 42, to the Minnesota Twins, for a player to be named later. By the Pittsburgh Pirates, righthanded reliever DON ROBINSON, 30, the last remaining player from their 1979 world championship team, to the San Francisco Giants, for a minor leaguer and $50,000.
By the Dallas Cowboys, in their first player-for-player swap since 1984, cornerback RON FELLOWS, 28, to the Los Angeles Raiders for wide receiver ROD BARKSDALE, 24.
DIED: Hall of Famer TRAVIS JACKSON, 83, shortstop and third baseman for the New York Giants from 1922 to 1936; in Waldo, Ark. Jackson, who played in four World Series, had a career batting average of .291.