A roundup of the week Aug. 13-19

BOXING—CHANG JUNG KOO of Korea retained his WBC light flyweight title by stopping Japan's Katsuo Tokashiki on a ninth-round TKO in Pohang, South Korea.

Francisco Quiroz of the Dominican Republic defended his WBA junior flyweight title by knocking out Victor Sierra of Panama in the second round in Panama City.

CYCLING—BERND DITTERT of East Germany set a world indoor record of 4:36.47 in the 4,000-meter individual pursuit in Moscow, lowering by 1.21 the mark set by Viktor Kupovets of the U.S.S.R. last year. At the same competition, East Germany's MICHAEL HUEBNER won the 500 in 26.479 seconds, bettering the world record of Aleksandr Panfilov of the U.S.S.R. by almost a full second, and in the women's 1,000 ERICA SALUMYAE of the U.S.S.R. shaved .83 second off her world mark of 1:09.07.

GOLF—LEE TREVINO finished four strokes ahead of Gary Player and Lanny Wadkins with a 15-under-par 273 to win the $700,000 PGA Championship in Birmingham, Ala., his first major title in 10 years (page 28).

Nancy Lopez shot a seven-under-par 281 to win an LPGA tournament in Shaker Heights, Ohio. She beat JoAnne Carner by one stroke and earned $65,000.

HARNESS RACING—NIHILATOR ($3.00), with Bill O'Donnell driving, paced the mile in 1:52[4/5] set a world record and take the winner's share of $1,080,500 in the Woodrow Wilson Pace at the Meadowlands, the richest horse race ($2,161,000 total purse) in harness or thoroughbred history. The 2-year-old colt beat Praised Dignity by 3¾ lengths.

HORSE RACING—CARR DE NASKRA ($10.20), ridden by Laffit Pincay Jr., held off Pine Circle to win the $307,500 Travers Stakes at Saratoga by¾ of a length. The 3-year-old colt ran the 1¼ miles in 2:02[3/5] (page 34).

Believe The Queen ($11.60), Don Miller up, won the 1‚⅛-mile, $328,400 Monmouth Handicap at Oceanport, N.J. in 1:48[1/5]. The 4-year-old colt beat World Appeal by a length.

MOTOR SPORTS—DANNY SULLIVAN, in a Lola T-800, edged the March driven by Rick Mears by .27 second to win a $439,050 500-mile CART event at the Pocono International Raceway. Sullivan averaged 137.303 mph.

Niki Lauda, in a McLaren TAG-Porsche, averaged 139.03 mph for 52 laps on the 3.7-mile Österreichring to win the Austrian Grand Prix, finishing 23.525 seconds ahead of Nelson Piquet, in a Brabham BMW. Lauda thus moved into first place in the Formula One standings by 4.5 points over teammate Alain Prost.

SOCCER—NASL: It was a week to forget for San Diego. Against Toronto, the Sockers' Paulo Moura scored the winning goal from 35 yards out—but he put it in Toronto's goal in a 2-0 defeat. San Diego was also shut out 2-0 by the Cosmos and fell from 12 points behind Vancouver to 27 back. Vancouver opened up a 10-point lead over Minnesota in the West with a 5-3 win over Tampa Bay and a 3-2 shootout victory at Golden Bay. 'Caps forward David Cross scored four second-half goals against the Rowdies, tying a league record. In the East, Chicago held on to first despite losing to Tulsa 2-1 in two OTs, but third-place Toronto won twice. Only seven points now separate the Sting, Cosmos and Blizzard.

TENNIS—JOHN McENROE crushed Vitas Gerulaitis 6-0, 6-3 to win the $450,000 Canadian Open in Toronto.

Martina Navratilova defeated Pam Shriver 6-4, 4-6, 7-5 to win a $150,000 tournament in Mahwah, N.J.

TRACK & FIELD—IRINA MESZYNSKI of East Germany threw the discus 240'8" to break the women's world record by four inches at a competition in Prague. The previous mark was set in May '83 by Galina Savinkova of the U.S.S.R.

At a meet in London, KIRK BAPTISTE of the U.S. set a world-record 31.70 in the seldom-run 300-meter dash, cutting .45 off Mel Lattany's year-old mark.

MILEPOSTS—FINED: After pleading guilty to a charge of driving while impaired, University of Oklahoma football coach BARRY SWITZER, 46, was fined $300, and his license was suspended for 90 days.

RESIGNED: As head coach of the USFL San Antonio Gunslingers, GIL STEINKE, 65, who becomes director of player operations. His replacement is defensive coordinator JIM BATES, 38.

SUSPENDED: By National League president Chub Feeney in the aftermath of a beanball exchange between the Padres and Braves on Aug. 12, San Diego manager Dick Williams, for 10 days, and for three days each, Atlanta manager Joe Torre and players Gerald Perry, Steve Bedrosian and Rick Mahler, and San Diego's Champ Summers and Bobby Brown. Those participants, along with nine others, were all fined, with Williams ($10,000) and Torre ($1,000) penalized most heavily (page 22).

TRADED: By Montreal, first baseman PETE ROSE, 43, to Cincinnati for infielder TOM LAWLESS, 27. Rose, who became manager-player of the Reds, replaces fired manager Vern Rapp (page 16).

DIED: LYNN McGLOTHEN, 34, who pitched for six major league clubs in an 11-year career and had a lifetime record of 86-93; in a mobile-home fire in Dubach, La.

Tommie Aaron, 45, younger brother of home-run king Hank Aaron and a seven-year veteran with the Milwaukee and Atlanta Braves; of leukemia, in Atlanta. Aaron had been a member of the Braves organization in various capacities for 27 years.

Virgil (Spud) Davis, 79, a lifetime .308 hitter as a catcher for four teams, including the St. Louis Cardinals' Gas House Gang, which won the 1934 World Series; of heart failure, in Birmingham, Ala.