A roundup of the week July 3-July 9

BOWLING—DAVE DAVIS of Hackensack, N.J. averaged 220 for 42 games to win the $60,000 Fresno Open by 366 pins from Ken Fernandez of Rogue River, Ore.

BOXING—SAMMY SERRANO of Puerto Rico retained his WBA junior lightweight championship with a ninth-round knockout of O Young Ho of South Korea, in San Juan.

GOLF—JANE BLALOCK won her second straight LPGA Tournament, the $75,000 Wheeling (W. Va.) Classic, shooting a final-round par 72 for a total of 207, seven strokes better than Kathy Martin. Earlier in the week, she shot a final-round four-under-par 68 for a total of 209, seven under par, to win the $75,000 Mayflower Classic at Noblesville, Ind. by three strokes over Joyce Kazmierski.

A par 3 on the 8th playoff hole gave LEE ELDER a victory over Lee Trevino in the $150,000 Greater Milwaukee Open. After 72 holes both had 13-under-par 275s.

Andy Bean made a three-foot putt for a par on the first hole of sudden death to win the $225,000 Western Open over Bill Rogers in Oak Brook, Ill. Both golfers finished regulation play at six-under-par 282.

HARNESS RACING—ARMBRO TIGER ($36.20), driven by Herve Filion, won the $307,594 Cane Pace at Yonkers by three-quarters of a length over Falcon Almahurst. The 3-year-old was timed in 1:59[1/5] for the mile.

HORSE RACING—UPPER NILE ($7.20), ridden by Jorge Velasquez, won the $106,400 Suburban Handicap at Belmont by 1½ lengths over Nearly On Time. Favored Forego finished fifth.

MOTOR SPORTS—DAVID PEARSON, driving a Mercury, averaged 154.340 mph to win the $186,325 Firecracker 400 at Daytona Beach, Fla. for the fifth time. Cale Yarborough, in an Oldsmobile, was second, a car-length back.

SOCCER—Mike Flanagan tied an NASL record by scoring five goals as New England beat California 5-2. Flanagan, who leads the league with 27 goals, matched the record held by the Cosmos' Giorgio Chinaglia, California's Steve David and Ron Moore, formerly with Chicago. Portland won two games by shutouts and remained seven points ahead of Vancouver in the National Conference Western Division. The Timbers beat Oakland 1-0, then defeated San Jose 5-0, as Goalkeeper Mick Poole upped his league-leading shutout total to nine. Vancouver also won twice, 2-1 over both Detroit and Dallas. Minnesota split a pair but remained three points ahead of both Tulsa and Dallas in the National Conference Central. The Kicks beat Houston 3-0 on Ron Futcher's hat trick, then lost to Detroit 2-1. Chicago, bidding for a wild-card playoff berth after losing its first 10 games, got a hat trick from newly acquired Arno Steffenhagen and beat Tulsa 5-2.

ASL: Los Angeles lost two straight and saw its lead in the Western Division cut to two points. Third-place Southern California defeated the Skyhawks 2-0 and snapped their five-game unbeaten streak, while second-place California scored two goals within a minute early in the second half and won 3-2. Although the New York Apollo appears to have the Eastern Division title locked up, the race for the two other playoff spots is furious. The New York Eagles tied Cleveland twice, 1-1 on a Clyde Watson goal and 2-2 as Tom Mulroy scored on a penalty kick. Sacramento lost twice, 3-1 to the Apollo, which won its 10th straight, and 1-0 to Connecticut in overtime.

SWIMMING—At the East German championships in East Berlin, BARBARA KRAUSE swam the 100-meter freestyle in 55.41 to set her second world record of the meet; the previous record of 55.65 was established in 1976 by Kornelia Ender. Seventeen-year-old ANDREA POLLACK set a world record in the 100-meter butterfly with a time of 59.46, .32 of a second better than the mark established by Christiane Knacke last year.

Alexander Sidorenko of the Soviet Union broke the world record in the 200-meter individual medley with a time of 2:05.24, .07 of a second better than the record set by Graham Smith of Canada last year.

TENNIS—BJORN BORG defeated Jimmy Connors 6-2, 6-2, 6-3 to win the Wimbledon men's singles championship for the third straight year. MARTINA NAVRATILOVA beat Chris Evert 2-6, 6-4, 7-5 for the women's title (page 12).

TRACK & FIELD—The U.S. defeated the Soviet Union 190-177 at Berkeley, Calif., the first win in the series for the Americans since 1969 (page 20). DEBY LaPLANTE broke the American record in the women's 100-meter hurdles with a 13.13. The previous mark of 13.14 was set by Patty Van Wolvelaere in 1978.

Udo Beyer of East Germany broke the world shot-put record with a toss of 72'8" in G‚Äö√†√∂‚Äö√†√áteborg, Sweden. The previous record of 72'2¼" was set by Alexander Baryshnikov of the Soviet Union in 1976.

VOLLEYBALL—Western Division leader Santa Barbara defeated Orange County in four games and won its ninth straight match, three short of the record set by the Stars in 1975. Seattle's Zbigniew Jasiukiewicz set a record with seven service aces against Continental Division-leading Tucson, but the Smashers lost the match to the Sky in four games.

MILEPOSTS—APPROVED: By the NBA Board of Governors, the exchange of ownership of the BOSTON CELTICS and the BUFFALO BRAVES and the transfer of the Braves' franchise to San Diego. John Y. Brown, who owned the Braves for one season, will take charge of the Celtics, along with co-owner Harry Mangurian. Irv Levin, who had owned the Celtics since 1975, will assume control of the Braves. The Celtics also traded Forward KERMIT WASHINGTON, Center KEVIN KUNNERT and Guard FREEMAN WILLIAMS, their first-round draft choice, to the Braves for Forwards MARVIN BARNES and BILLY KNIGHT and Guard NATE ARCHIBALD (page 18).

NAMED: PAUL DIETZEL, 53, as athletic director at LSU, replacing Carl Maddox. Dietzel, who coached the Tigers football team to an 11-0 record and the national championship in 1958, had been athletic director at Indiana University since 1976.

NAMED: HARRY HOWELL, 45, former general manager of the defunct Cleveland Barons, as coach of the newly organized Minnesota North Stars.

NAMED: BOB McCAMMON, 37, as coach of the Philadelphia Flyers, replacing Fred Shero. McCammon coached the Maine Mariners to the American Hockey League championship last season.

PENALIZED: By the Men's International Professional Tennis Council, ILIE NASTASE, for a yearlong series of infractions that included ungentlemanly court conduct. The council fined Nastase $5,000 and suspended him from Grand Prix competition for three months.

SOLD: To the WHA Winnipeg Jets, the franchise and all player contracts of the HOUSTON AEROS, by owner Kenneth Schnitzer. The Aeros won the WHA title in 1974 and 1975.