HORSE RACING—CHOMPION ($19.80), ridden by Michael Hole, closed with a rush to beat Snow Sporting by 1� lengths in the $106,000 Pan American Handicap at Gulfstream Park, running the mile and a half in 2:25 [3/5] to break the track record by [1/5] second.
Jacinto Vasquez rode LOUD ($6.80) to a decisive victory in the $57,000 Excelsior Handicap at Aqueduct. Personality, last year's top 3-year-old, finished second, a length and a half behind.
Cougar II ($5.80) posted a three-length victory in the $125,000 San Juan Capistrano Handicap at Santa Anita in a race in which Lonny's Secret fell in the stretch and Fort Marcy was disqualified from second place.
SWIMMING—In the AAU short-course championships in Pullman, Wash.—trials for the Pan-American meet in August—four individual American records were set and two tied. SUE ATWOOD of Lakewood, Calif. broke her 100-yard backstroke mark with a 58.1. GARY HALL of Indiana swam a record 1:48.4 in the 200-yard butterfly. LYNN COLELLA, a Seattle coed, took the 200-yard breaststroke in 2:21.9. DENNA DEARDURFF of Cincinnati went 57.0 in the 100 fly. ALICE JONES of Cincinnati and MIKE STAMM of Indiana tied records for the 200-yard butterfly (2:03.9) and the 100-yard backstroke (51.2), respectively.
SYNCHRONIZED SWIMMING—The SAN FRANCISCO MERIONETTES won the team tide and the Santa Clara Aquamaids finished second in the AAU indoor championships at Charlotte, N.C. Heidi O'Rourke of San Francisco took the solo event, then paired with teammate Joan Lang to win the duel.
TENNIS—CLIFF RICHEY defeated Vladimer Zednick of Czechoslovakia 6-1, 6-3 to win the Des Moines International singles.
MILEPOSTS—ACCEPTED: By the U.S. table tennis team, an invitation to play in Communist China. This is the first visit granted an American organization since the Communists took power in 1949.
AWARDED: As Rookies of the Year in the ABA, DAN ISSEL of the Kentucky Colonels and CHARLIE SCOTT of the Virginia Squires, after a tie in the voting.
COACHING CHANGES: JOHNNY OLDHAM, from basketball coach to director of athletics at Western Kentucky; DICK CAMPBELL, former basketball coach at The Citadel to coach at Xavier of Cincinnati; BILL MUSSELMAN, from basketball coach at Ashland ( Ohio) College to coach at the University of Minnesota.
HOSPITALIZED: ADOLPH RUPP, Kentucky basketball coach, with an infected foot. He has canceled speaking engagements and summer coaching clinics.