BOATING—MISS SUPERTEST III, piloted by Canada's Bob Hay ward, international Harms-worth Trophy for unlimited hydroplanes at Detroit. Withdrawn on last laps because of mechanical-failure: Maverick, piloted by Bill Stead of U.S. Two days later Maverick won 14th running of Silver Cup race at Detroit. Withdrawn because of other commitments: Miss Supertest III.
Jerry Jenkins, Grosse Pointe, Mich., U.S. Thistle sailing title, at St. Petersburg, Fla.
BOXING—HENRY COOPER, 5-round TKO over Gawie De Klerk to retain British Empire heavyweight title, Porthcawl, Wales.
Roy Harris, 10-round decision over Joe Bygraves, heavyweights, Houston.
Tony Anthony, 8-round KO over Bob Young, light heavyweights, East Providence, R.I.
FOOTBALL—CHICAGO BEARS 54, Pittsburgh Steelers 17, exhibition, Houston.
New York Giants 38, Detroit Lions O, exhibition, Detroit.
Los Angeles Rams 34,, Chicago Cardinals 21, exhibition, Los Angeles.
Baltimore Colts 23, Washington Redskins 10, exhibition, Baltimore.
GOLF—GENE LITTLER, $35,000 Miller Open, with 265 for 72 holes, Milwaukee.
Fritz Leffingwell Jr., Miami Shores, Fla., International Jaycee junior championship, with 290 for 72 holes, Portsmouth, Va.
Steve Spray, Indianola, Iowa, Western junior championship, 8 and 7 over Dave Leon, Tucson, Ariz., at Champaign, Ill.
Charles Boswell, Birmingham, international blind championship for sixth straight time, with 192 for 36 holes, Kitchener, Ont.
Tom Hunt, Ambler, Pa., National Amputee Golfers Assn. title, with 232 for 54, holes, Savannah.
HORSE RACING—DUNCE (son of Tom Fool): $155,425 American Derby, 1‚⅛, m. in 1:49 3/5, by 3¼ lengths, Arlington Park. Lois C. Cook up.
Tompion (son of Tom Fool): $114,475 Hopeful Stakes, 6½ f. in 1:17 2/5, by l¼ lengths, to close Saratoga season with richest race in track's 91-year history. Willie Shoemaker up.
HEAVENLY BODY: $104,600 Princess Pat Stakes, 6 f., in 1:09 4/5, by 1¾ lengths, Arlington Park. Manuel Ycaza up.
Silky Sullivan, come-from-nowhere wonder horse who once won millions of friends and a few races, began losing both consistently after 1958 Kentucky Derby fiasco, was retired to stud in California because of recurring leg trouble.
INTERNATIONAL MOTOR SPORTS—MICKEY THOMPSON, Los Angeles, drove streamlined four-engine car over Utah salt fiats at 346.120 and 314.905 mph for 330.513 average and American speed record. Earlier, Thompson hit 362.318 clip in unofficial experimental run.
PAN AMERICAN GAMES—In first three days of games United States took 18 gold medals. They are: 400-meter hurdles: JOSH CULBREATH. 100-meter dash: RAY NORTON. Pole vault: DON BRAGG. Broad jump: IRVIN (BO) ROBERSON. Women's 60-meter dash: ISABELLE DANIELS. Featherweight weight lifting: ISAAC BERGER. Bantamweight: CHARLES VINCI. Fencing: (team, foil) JOSEPH PALETTA, GENE GLAZER, HAL GOLDSMITH, ALBERT AXELROD; (individual foil) GOLDSMITH, 5,000-meter race: BILL DELLINGER. 800-meter race: TOM MURPHY. Women's discus: EARLENE BROWN. Women's 100-meter dash: LUCINDA WILLIAMS. Decathlon: DAVE EDSTROM. Shooting: (team free pistol) NELSON LINCOLN, ROY SUTHERLAND, LLOYD BURCHETT, VIC MAASS; (individual free pistol) LINCOLN. Hammer throw: AL HALL. High jump: CHARLES DUMAS.
SHOOTING—CLYDE BAILEY, Oquawka, Ill. farmer, outshot field of 2,391 to win 60th Grand American handicap trapshooting championship, Vandalia, Ohio.
SWIMMING—CAROLYN SCHULER, 16, Orinda, Calif., 200-meter butterfly in 2:38.1 for world record, at San Francisco.
TENNIS—KAREN HANTZE, San Diego, over Nancy Richey, San Angela, Texas, 8-6, 6-1, in U.S. girls lawn championship, Philadelphia.