FOR THE RECORD

ARENA FOOTBALL—Chicago, 9-0 on the season, clinched the regular-season title by winning twice during the week over third-place Pittsburgh. Bruisers quarterback Ben Bennett threw for 13 touchdowns in the pair of victories, six in a 46-25 triumph and seven in a 54-47 win. Detroit (6-3) moved into sole possession of second place with a 49-9 trouncing of last place New York (1-8) as Dwayne Dixon had three TD catches. In a battle for fourth, Los Angeles (4-5) beat New England (2-7) 49-34 behind Malt Stevens' 19-of-29 passing for 249 yards and six TDs.

PRO BASKETBALL—The Los Angeles Lakers defeated the Detroit Pistons 108-105 in Game 7 to win the NBA title four games to three (page 58).

BOWLING—BRYAN ALPERT beat Ray Valdovino 234-226 in the title game to win a PBA tournament and $20,000 in Dublin, Calif.

BOXING—MIKE TYSON knocked out Michael Spinks in the first round to retain the undisputed world heavyweight crown (page 18).

EQUESTRIAN—At the trials for the U.S. Olympic dressage team in Gladstone, N.J., ROBERT DOVER of Gladstone finished first and qualified two horses, Juvel and Federleicht. Others who earned berths on the team were JESSICA RANSEHOUSEN of Unionville, Pa., riding Orpheus; BELINDA BAUDIN of Kirkwood, Pa., on Christopher: and LENDON GRAY of Stanfordville, N.Y., on Later On.

FENCING—At the U.S. National Championships in Chicago, which concluded the U.S. Olympic fencing trials, JON NORMILE of Berea, Ohio, upset STEVE TREVOR of New York City to win the men's èpèe title, but Normile didn't amass enough points in previous competitions to make the Olympic team. Joining Trevor on the èpèe squad in Seoul will be ROBERT MARX of Portland, Ore.; JOHN MOREAU of San Antonio; ROBERT STULL of Austin, Texas; and LEE SHELLEY of Hackensack, N.J. In the women's foil competition, SHARON MONPLAISIR of New York City defeated MOLLY SULLIVAN of North Andover, Mass. Both finalists earned berths on the women's Olympic foil team, which will also include CAITLIN BILODEAUX and MARY JANE O'NEILL of Concord, Mass., and ELAINE CHERIS of Denver.

GOLF—LARRY NELSON shot a one-over-par 73 in the final round and held on to win the Atlanta Classic by one stroke over Chip Beck. Nelson finished with a 20-under-par 268 to earn the $126,000 first prize.

Kathy Postlewait beat Patty Sheehan by one stroke to win an LPGA tournament and $75,000 in Wilmington, Del. Postlewait shot an eight-under-par 276.

HARNESS RACING—GO GET LOST ($9.40), driven by Tom Sells, defeated Lord Quick by 1¾ lengths to win the second leg of the Statue of Liberty Trot, at the Meadowlands. The 4-year-old trotted the mile in 1:54[3/5] and won $62,500. Favored Mack Lobell finished third.

Runnymede Lobell ($3.70), with Yves Filion in the sulky, won the North America Cup at Greenwood Raceway, in Toronto, by 1¼ lengths over Squirter, The 3-year-old colt paced the mile in 1:54[4/5] to collect $521,500.

HORSE RACING—CUTLASS REALITY ($11.40), Gary Stevens in the saddle, defeated Alysheba by 6½ lengths to win the Hollywood Gold Cup at Hollywood Park. The 6-year-old colt covered the 1¼ miles in 1:59[2/5] to earn $275,000.

MOTOR SPORTS—RUSTY WALLACE, driving a Pontiac, beat Bill Elliott, in a Ford, by .25 of a second to win a 400-mile NASCAR race and $64,100 in Brooklyn, Mich. Wallace averaged 153.55 mph for 200 laps over the two-mile Michigan International Speedway oval.

SAILING—CONGERE, a 77-foot maxi skippered by Bevin Koeppel, won the 130-boat, 635-mile biennial Newport to Bermuda Ocean Yacht Race in a time of three days, 15 hours and 24 minutes. Competing in the International Offshore Rule Division, Congere beat runner-up Boomerang, an 81-foot sloop, by 1 hour, 20 minutes. The 73-foot sloop CANNONBALL, with Charles Robertson at the helm, won the International Measurement System Division in three days, 18 hours and 48 minutes.

SOCCER—THE NETHERLANDS defeated the Soviet Union 2-0 to win the European Championship, in Munich.

TABLE TENNIS—At the U.S. Open in Miami Beach, JEAN PHILLIPE GATIEN of France defeated Mikael Apelgren of Sweden 21-10, 21-14, 20-22, 20-22, 21-16 for the men's title, and JUN XU of China won the women's championship 21-5, 20-22, 21-17, 21-16 over countrywoman Zihe Cheng.

TRACK & FIELD—In San Diego, RAMONA PAGEL surpassed her American women's shot-put mark with a throw of 66'2½", which was two feet longer than her record-setting put of May 8.

TRIATHLON—At a U.S. Triathlon Series event in Baltimore, MIKE PIGG beat Harold Robinson by 2 minutes, 51 seconds to win the men's division in 1:51:49. Among the women, KIRSTEN HANSSEN finished first with a time of 2:07:19, 26 seconds ahead of runner-up Joy Hansen (page 65).

VOLLEYBALL—The UNITED STATES beat the Soviet Union 11-15, 14-16, 15-9, 15-10, 15-4 in the finals to win the USA Cup tournament, in Los Angeles (page 40).

MILEPOSTS—FIRED: By the New York Yankees, manager BILLY MARTIN, 60, who in his three-month-long fifth tour of duty as the Yankee skipper guided them to a 40-28 record. LOU PINIELLA, 44, who managed the Yanks in 1986 and '87, replaced Martin (page 96).

FOLDED: The MINNESOTA STRIKERS and the ST. LOUIS STEAMERS of the Major Indoor Soccer League, which now has nine teams.

NAMED: As coach of the St. Louis Blues, BRIAN SUTTER, 31, who played 12 years for the Blues before retiring after the 1987-88 season.

SUSPENDED: By baseball commissioner Peter Ueberroth, Montreal Expo pitcher FLOYD YOUMANS, 24, for failing to comply with a league-imposed drug testing program. Youmans had been undergoing periodic testing since last fall as part of his alcohol rehabilitation. The length of the suspension had not yet been determined.

TRADED: By the Kansas City Chiefs, defensive end ART STILL, 32, to the Buffalo Bills for a future undisclosed draft choice.

DIED: Former Georgia Tech football coach and athletic director BOBBY DODD, 79; of lung cancer; in Atlanta. In his 22 years (1945-66) as the Yellow Jackets' coach, Dodd amassed a 165-64-8 record and won nine bowl games. From 1951 to '53, Dodd coached 31 consecutive games without a loss, including a 12-0 season in '52.