A roundup of the week June 2-8

BOXING—Japan's GUTS ISHIMATSU scored a unanimous decision over Arturo Pineda of Mexico in Osaka to retain his WBC lightweight title.

South Korea's YU JAE DO won the world junior middleweight title with a seventh-round knockout of Koichi Wajima of Japan in Kitakyushu, Japan.

GOLF—RAY FLOYD came from behind with a final-round 69 and 278 total to win the $250,000 Kemper Open and $50,000, in Charlotte, N.C. Gary Player and John Mahaffey were tied for second, three strokes back.

Joanne Carner shot an even-par 73 for a 213 total in winning the $50,000 Girl Talk Classic and $7,000, in Pine Plains, N.Y. Sandra Spuzich finished six strokes behind.

Vinny Giles of Richmond, Va. routed England's Mark James 8 and 7 to win the British Amateur at Hoylake, England.

Dale Morey of High Point, N.C. shot an even-par 70-74-144 to win the 71st annual U.S. Senior Golf Association championship by three strokes over Edward Meister and Lewis Oehmig in Rye, N.Y.

HARNESS RACING—NERO ($2.40) and BRET'S CHAMP ($4.80) won the two divisions of the $112,500 Battle of the Brandywine in Wilmington, Del. Joe O'Brien drove Nero to a 1-length victory over Alert Bret, clocking 2:00[3/5] for the mile; Bill Haughton was at the reins of Bret's Champ, who turned in a 1:59⅗ finishing 1¾ lengths ahead of Momentum (page 22).

HORSE RACING—Long shot AVATAR ($28.40), ridden by Willie Shoemaker, held off fast-closing Foolish Pleasure to win the $193,600 Belmont Stakes by a neck, covering the 1½ miles in 2:28[1/5] (page 16). Preakness winner Master Derby was third.

Italian-owned GRUNDY, ridden by Pat Eddery, won the $322,000 English Derby by three lengths over Nobiliary, covering the 1½ miles at Epsom Downs in 2:35[3/5].

Leading almost all the way, COLONEL POWER ($6.80), Phil Rubbicco riding, won the 1‚⅛-mile, $105,600 Illinois Derby at Sportsman's Park in 1:50⅕¾ of a length over Ruggles Ferry.

MOTOR SPORTS—NIKI LAUDA of Austria won his third straight Formula I race, taking the 200-mile Swedish Grand Prix in 1:59:18 at Anderstorp. Carlos Reutemann was second, 6.3 seconds back; Mario Andretti and Mark Donohue collected their first Grand Prix points of the season by placing fourth and fifth respectively.

SOCCER—NASL: The Tampa Bay Rowdies wrested first place from Miami in the Eastern Division with a 1-0 triumph in the Orange Bowl, Derek Smethurst of the Rowdies scoring the only goal. In another tight race, Seattle, with a 2-1 record, moved into a tie with Vancouver (1-2) atop the Western with 60 points each. Third-place Los Angeles was 1-1, characteristic of its up-and-down season. In whipping San Jose 5-1, the Aztecs set a club record for goals scored, and Uri Banhoffer set a Los Angeles team mark for points during one game, picking up six with his two goals and two assists. Central leader St. Louis maintained its awesome lead despite a 3-2 overtime loss to second-place Dallas, which was 26 points to the rear and tied with Denver. Boston climbed to first in the Northern with a win and a loss, while three teams (New York, Toronto and Hartford) were clumped together behind the Minutemen.

ASL: Cincinnati's win coupled with Cleveland's loss enabled the Comets to move within a point of the Cobras in the Midwestern Division. The Comets defeated Boston 3-2 as Goalie Tony Cruz made 16 saves. Connecticut, playing before a crowd of 3,492, its largest of the season, beat Cleveland 4-2. Yankee Dean Rusow, a member of the U.S. Olympic team, scored the winning goal midway through the second half. Pittsburgh still hasn't made it into the win column, bowing to the New Jersey Brewers 3-1. Bosco Bojeski of the Brewers tallied a goal and assisted on another.

SWIMMING—BIRGIT TREIBER, 15, of East Germany shaved .23 off the world record for the 200-meter backstroke, turning in a 2:16.10 during the national championships in Wittenberg-Piesteritz, East Germany. The former mark was set by Nancy Garapick of Canada in April. Another East German star, ULRIKE TAUBER, bettered her 400-meter individual medley mark by .2 with a 4:52.2 at the same meet. Tauber's previous record was set during last year's European championships.

TRACK & FIELD—Jamaican DON QUARRIE nipped STEVE WILLIAMS by inches in the 220 as both men were clocked in a world-record 19.9 during the Steve Prefontaine Classic in Eugene, Ore. Tommie Smith set the old record of 20.0 in 1966. Quarrie was timed in 19.8 for the 200 meters.

UTEP won the NCAA championship, amassing 55 points to runner-up UCLA's 42, at Provo, Utah (page 20).

Roslyn Bryant ran the 220 in 23.2 in the Central AAU meet at the University of Chicago to set an American record. The previous mark of 23.3 was held by Mabel Ferguson.

VOLLEYBALL—IVA: Stanislaw Gosciniak of Poland, the playmaking leader of the Santa Barbara Spikers who needs an interpreter, electrified 2,780 home fans in Robertson Gym with his spectacular saves and spike sets in leading his team to a 12-9, 3-12, 10-12, 12-7, 12-6 victory over the Los Angeles Stars. The Spikers also handed the San Diego Breakers their only loss against two wins, 12-7, 12-2, 10-12, 11-13, 12-5. Southern California split two contests, beating El Paso-Juarez 9-12, 12-10, 12-9, 12-9 as Toshi Toyoda and Tony Crabb provided the offensive edge, then bowing to the Breakers 12-8, 12-7, 6-12, 12-6.

MILEPOSTS—DISAPPROVED: By NBA Commissioner Lawrence O'Brien, the New York Knicks' contract with George McGinnis, on grounds that the draft rights to the rangy forward still belong to the Philadelphia '76ers. O'Brien further ordered that the Knicks forfeit their 1976 first-round draft pick. In other business, club owners voted to fine the Atlanta Hawks $400,000 for signing Julius Erving three years ago, since Milwaukee had the rights to him. Atlanta also must give up two second-round 1976 draft picks.

NAMED: GRAHAM M. HALL of Larchmont, N.Y., as the U.S. Naval Academy's first civilian sailing director.

NAMED: Philadelphia Flyer Defenseman TED HARRIS, 38, as head coach of the Minnesota North Stars.

SIGNED: All-America TOM McMILLEN of Maryland to a five-year contract by the Buffalo Braves. The No. 1 draft choice of the Braves a year ago, the 6'11" McMillen spent the past year studying on a Rhodes scholarship at Oxford and playing basketball on weekends for Bologna in the Italian League.

SIGNED: Soccer superstar PELÉ to a reported three-year, $4.7 million contract by the NASL New York Cosmos.

TRADED: 6'11" San Antonio Spur SWEN NATER, the ABA's Rookie of the Year in 1973-74, to the New York Nets for 6'9" Forward LARRY KENON. In an associated deal the Nets sent Guard MIKE GALE to the Spurs for an undisclosed amount of cash.

TRADED: Guard BUTCH BEARD, a starter on NBA champion Golden State, to Cleveland to complete a trade made two weeks ago that sent Cavalier Forward DWIGHT DAVIS to the Warriors for two draft picks.