BOATING—With three preliminary-heat victories and a second-place finish in the final, BILLY SCHUMACHER of Seattle totaled 1,500 points to easily win the Gold Cup race for unlimited hydroplanes on Seattle's Lake Washington.
BOXING—Kicking off an eight-man tournament to select an occupant for the vacant world heavyweight title. Louisville's JIMMY ELLIS scored a ninth-round TKO over Philadelphia's Leotis Martin, and San Francisco's THAD SPENCER upset Chicago's Ernie Terrell, the 2-1 favorite, with a unanimous decision after 12 rounds at Houston's Astrodome (page 12).
Buster Mathis, the unbeaten 23-year-old heavyweight from Grand Rapids. Mich., stretched his victory streak to 20 and his knockout record to 14 when he floored Irish Wayne Heath of Oklahoma City in the fifth round of a scheduled 10-rounder in Los Angeles.
FOOTBALL—The GREEN BAY PACKERS shut out the College All-Stars for the second year in a row, 27-0, at Chicago's Soldier field (page 16).
GOLF—U.S. Open Champion JACK NICKLAUS shot a final-round 69 for a 72-hole 10-under-par total of 274 to win the $102,000 Western Open in Chicago by two strokes over Doug Sanders.
HARNESS RACING—CARLISLE ($4.40), driven by Billy Haughton, rushed away with the $89,580 Maturity Trot at Chicago's Sportsman's Park, beating Governor Armbro by seven lengths.
With Bob Farrington, the nation's leading driver, in the sulky, DANCING DAVID ($5.50) raced to a neck victory over Hope Time in the $30,000 General "Mad" Anthony Free-For-All Invitational Pace at Brandywine, while the favored 10-year-old New Zealand expatriate, Cardigan Bay, in his first race in seven weeks, finished last in the live-horse field.
HORSE RACING—Mrs. Edith Bancroft's DAMASCUS ($3.60), Willie Shoemaker up, gained his seventh stakes victory of the season and strengthened his claim to the 3-year-old crown when he defeated In Reality by seven lengths in the $120,000 American Derby at Arlington Park. The bay colt's time of 1:46[4/5] set a track record for the 1? miles.
Wheatley Stable's STUPENDOUS ($6.80), with Eddie Belmonte aboard, turned in a track record of 1:48.1 in winning the 1?-mile $56,200 Whitney Stakes at Saratoga by a neck over George D. Widener's favored Ring Twice.
Florida-bred SUBPET ($9.40), Thomas LeClair's supplementary entry, upset favored What a Pleasure by two lengths in the six-furlong $120,705 Sapling sprint for 2-year-olds at Monmouth Park.