TENNIS—MARK COX of Great Britain upset second-seeded Ken Rosewall in the second round of the U.S. Open championships at Forest Hills. Jan Kodes of Czechoslovakia, seeded eighth, was defeated by amateur ALEX MAYER JR. of Wayne, N.J., and ILIE NASTASE of Rumania was forced into a tie-breaker in the fifth set before winning his match with unseeded Roger Taylor of Great Britain. The only unexpected winner in the women's bracket, which includes Billie Jean King, Evonne Goolagong, Chris Evert and Margaret Court in the same tournament for the first time, was KAZUKO SAWAMATSU of Japan, who defeated sixth-seeded Nancy Gunter.
MILEPOSTS—ACQUIRED: By the Detroit Tigers, First Baseman FRANK HOWARD, 36, who has hit 369 home runs in his 15-year major league career but only nine this season to go with a .244 batting average; from the Texas Rangers for the waiver price of $20,000.
FORMED: With little fanfare, the ASSOCIATION OF TENNIS PROFESSIONALS, similar in purpose to golf's PGA and designed to give 56 of the world's foremost male players control over their own tournaments. Arthur Ashe, a spokesman for the group, said the players had already contributed personal funds to make up the prize money for a first tournament and that a tour director would be named.
RETIRED: After a fall in which he broke a leg in Epsom, England, MILL REEF, Paul Mellon's 4-year-old winner of the Epsom Derby, the French Prix de l' Arc de Triomphe and more than $730,000.
SUSPENDED: By the San Diego Chargers, sometime Running Back DUANE THOMAS, for failing to report to camp ever since he was traded to the Chargers by the Dallas Cowboys more than a month ago. The suspension carries with it a $150-a-day fine effective Aug. 28.