A roundup of the week Oct. 16-22

PRO BASKETBALL—NBA: Tommy LaGarde, Marvin Webster's replacement at center, turned out to be a surprise—at least for one game—in Seattle. He grabbed 13 rebounds and scored a career-high 32 points against San Antonio to lead the Sonics to their fifth win without a loss. Seattle had to overcome a 37-point performance by George Gervin, who had scored 46 in a win earlier against San Diego. Washington, which also remained unbeaten, handed Philadelphia its first loss and took over first place in the Atlantic Division. New Jersey occupied the top spot with a 2-0 record at the end of the opening week, but after that the Nets dropped four straight, including a 139-87 drubbing in Houston. Things were even worse in Detroit. Not only were the Pistons winless in five starts but first-year Coach Dick Vitale also was in the hospital all week recuperating from a stomach disorder. Detroit's one bright spot has been Bob Lanier, who has averaged 28.6 points a game. Milwaukee and San Diego also have relied heavily on individuals. Marques Johnson scored 97 points in three games for the Bucks (2-1), who lost Forward David Meyers for a month with a back injury, and Clipper Guard Lloyd Free averaged nearly 30 points in four games, the last of which was a 125-119 loss to Indiana that gave Pacer Coach Bob Leonard his 500th regular-season victory. He is the fourth professional coach to record 500 wins.

BOXING—DANNY (Little Red) LOPEZ of Los Angeles retained his WBC featherweight title in Pesaro, Italy when Fel Clemente of the Philippines was disqualified in the fourth round for butting.

CHESS—World champion ANATOLY KARPOV defeated Viktor Korchnoi six games to five to retain his title in Baguio City, Philippines. In the 32nd and final game, he forced the challenger to resign on the 41st move (page 72).

PRO FOOTBALL—There were upsets all over the National Football League and the quarterbacks, in most cases, proved to be the main reasons. Archie Manning's 19-yard touchdown pass to Tony Galbreath with 2:22 remaining carried New Orleans to a 10-3 win over previously unbeaten Los Angeles. Fran Tarkenton led Minnesota over Green Bay 21-17 by completing 26 of 43 for 262 yards and three touchdowns. In the process, he became the first quarterback to pass for 45,000 yards. Detroit's Gary Danielson also had a good day in the Lions' 31-14 rout of San Diego. He was 22 of 32 for 210 yards and three touchdowns, two of which went to rookie Wide Receiver Jesse Thompson. Another rookie, Tampa Quarterback Doug Williams, threw for two touchdowns and ran for another as the Buccaneers beat Chicago 33-19. Tampa held Walter Payton, who had rushed for 157 yards in Chicago's 16-7 Monday-night loss to Denver, to 34 yards on 15 carries. Joe Pisarcik completed only three passes in the Giants' 17-6 win over Washington, but one was a 43-yard touchdown strike and another a 46-yard flea-flicker that set up his own three-yard scoring run. The loss dropped the Redskins into an NFC East tie with Dallas, which defeated Philadelphia 14-7. The Cowboys' Tony Dorsett watched most of the game from the bench. Head Coach Tom Landry had demoted him to second string for oversleeping and missing a practice session. In Baltimore, Bill Troupe, substituting for the injured Bert Jones, threw 19 yards to Glenn Doughty for the Colts' only score, and the defense blocked a last-second Denver field-goal attempt to give the Colts a 7-6 victory over the Broncos. For Seattle, it was the performance of the other team's quarterback that was crucial. Oakland's Ken Stabler, who now has thrown 19 interceptions, threw four in the Raiders' 27-7 loss to the Mariners. In the battle for first place in the AFC East, New England beat Miami 33-24 as Horace Ivory ran for 113 yards and two touchdowns (page 30). The Jets moved into a second-place tie with the Dolphins by beating winless St. Louis 23-10. Pat Leahy had three field goals and continued to lead the league in scoring, with 66 points. Atlanta rallied from a 17-7 deficit with a field goal by Tim Mazzetti with one second left to beat San Francisco 20-17. In other games, Buffalo defeated Cincinnati 5-0, the Bengals' eighth straight loss, and Kansas City snapped a six-game losing streak with a 17-3 win over the Cleveland Browns.

GOLF—BOBBY WADKINS birdied the first playoff hole to win the $210,000 European Open in Walton Heath, England over Bernard Gallacher of Britain and Gil Morgan. The three golfers finished at 283, nine under par (page 40).

Isao Aoki of Japan defeated New Zealand's Simon Owen 3 and 2 in the 36-hole final to win the $305,000 World Match-Play Championship at Wentworth, Surrey, England.

Donna Caponi Young shot a final-round three-under-par 69, for a 207 total to win the $50,000 LPGA tournament in Houston by three strokes over Alexandra Reinhardt.

Led by BOB CLAMPETT of Carmel, Calif., who took individual honors, the U.S. won the Eisenhower Trophy, the men's world amateur team championship, in Pacific Harbour, Fiji. Canada finished second.

HOCKEY—NHL: No, the Montreal Canadiens aren't invincible. After beating Philadelphia 3-2, the Canadiens dropped two in a row—to the New York Islanders 3-1, and to Atlanta 7-5. Boston enjoyed a 3-0 week behind the scoring of John Wensink, who has had five goals in as many games. Following a loss to the Bruins, Toronto split a pair with Buffalo and beat Philadelphia. Both wins were shutouts for Maple Leaf Goaltender Mike Palmateer. Chicago Wing John Marks scored three goals in three games as the Black Hawks extended their unbeaten string to four and moved to the top of the Smythe Division. Chicago replaced Vancouver, which after winning its first two games and tying the Black Hawks, dropped three straight. The Colorado Rockies and Pittsburgh Penguins both snapped five-game winless streaks.

WHA: Things were looking a bit brighter for two of last season's doormats. Cincinnati, a seventh-place finisher last year, completed a swing through Canada with a tie and a win, and then returned home to beat Birmingham and Edmonton. Indianapolis, which finished last, beat Quebec 4-0. It was the first time in their history that the Nordiques had been shut out at home in regular-season play. Quebec did not fare any better against New England, which remained undefeated and in first place. Led by Mike Antonovich's two goals and Dave Keon's four assists, the Whalers won their home opener 7-1. Birmingham put on the offensive show of the week as Bulls' Winger Louis Sleighter and Defenseman Gaston Gingras both scored hat tricks in a 9-3 win over Indianapolis.

HORSE RACING—WAYA ($5.20) defeated Tiller by a nose in the $200,000 Turf Classic at Belmont. With Angel Cordero Jr. in the saddle, the 4-year-old filly covered the 1½ miles in a stakes-record 2:26[4/5].

Mac Diarmida ($4.50), ridden by Jean Cruguet, won the $185,000 Canadian International Championship at Toronto by 1½ lengths over Dom Alaric. The 3-year-old ran the 1‚Äö√Ñ√∂‚àö√±‚àöœÄ miles in 2:41[4/5].

Spectacular Bid ($2.60), Jorge Velasquez up, won the $125,000 Young America at the Meadowlands by a neck over Strike Your Colors. The 2-year-old's time for the mile and one-sixteenth was 1:43[1/5].

MARATHON—BILL RODGERS won his third consecutive New York City Marathon, finishing in 2:12:12, two minutes ahead of Ian R. Thompson. Trevor Wright was third. GRETE WAITZ was the first woman finisher. Her time of 2:32:30 was 2:18 better than the world record for women set by Christa Vahlensieck of West Germany last year. Martha Cooksey was the second woman across, Sue Petersen the third (page 24).

MOTOR SPORTS—CALE YARBOROUGH averaged 117.288 mph in an Oldsmobile to win the $150,000 American 500 Grand National in Rockingham, N.C. by more than two laps over Bobby Allison's Ford.

TENNIS—Defending champion JIMMY CONNORS beat Geoff Masters 6-0, 6-0, 6-4 to win the $205,000 Australian Indoor Championship in Sydney.

MILEPOSTS—HIRED: DON KESSINGER, 36, as player-manager of the Chicago White Sox. He replaces Larry Doby, who, after succeeding Bob Lemon as manager last June 30, had a 37-50 record. An infielder for the Cubs (1965-75), the Cardinals (1976-77) and the White Sox (1977-78), Kessinger won the Gold Glove Award in 1969 and 1970 and has a .253 career batting average.

DIED: GUNNAR NILSSON, 29, former Swedish Formula I driver for Lotus and No. 2 driver to Mario Andretti in 1976 and 1977; of cancer; in London.