BOXING—ADOLPH PRUITT of Los Angeles, the WBA's second-ranked junior welterweight, walloped Japanese welterweight champion Sorimachi Ryu with a left hook, dropping him for the third time in 1:58 of the second round of a scheduled 10-round nontitle bout in Tokyo.
GOLF—After scrambling and struggling over the front nine, the high-powered team of ARNOLD PALMER and JACK NICKLAUS pulled away down the stretch to score a combined final-round 67, their second sweep of the $200,000 National Four-Ball Championship in Ligonier, Pa. (page 16).
HARNESS RACING—COLUMBIA GEORGE ($4.20) raced the fastest mile in the 150-year history of Ontario harness racing, winning the $27,100 Queen City Pace for 3-year-olds by 2� lengths over Keystone Pat, with Keystone Aaron third. Roland Beaulieu guided the winner home in 1:57[4/5].
Confusion seemed to be the keynote at the $30,000 Adios Harry Invitation Pace at Wilmington, Del. First RUM CUSTOMER ($4.80), driven by Herve Filion, scored a length victory, covering the mile in 1:57[4/5]. Then Horton Hanover, guided by Joe O'Brien, finished second but was disqualified for interference in the stretch and was placed sixth. Tempered Yankee, who finished fourth, was moved up to second, while Laverne Hanover, the actual third-place finisher, went into a lapped-on-break at the wire and was dropped to fifth. Finally, Chief Crazy Legs, who had finished fifth, came out third in the revised placements.
HOLLERING—H. H. OLIVER, a 61-year-old hog farmer from Goldsboro, N.C., outshouted 28 other vociferous contestants to win the second annual National Hollerin' Contest at Spiveys Corner, N.C., a sporting event based on the old Southern rural custom of neighbors calling to each other from distances of half a mile or more.
HORSE RACING—England's champion jockey, Lester Piggott, took Charles Engelhard's unbeaten 3-year-old NIJINSKY to the lead a furlong and a half from the final post at the $113,295 King George VI and Queen Elizabeth Stakes at Ascot to win his 10th straight race by two lengths for the $75,975 prize. Arthur M. Budgett's Blakeney, winner of the 1969 Epsom Derby, hung on for second, four lengths in front of third-place finisher Crepellana.
Gordon Grayson's VIRGINIA CRACKER ($153.20), ridden by Robert Howard, scored the biggest upset in the history of the Delaware Oaks, reaching the end of the 1?-mile run for 3-year-old fillies with a 1�-length margin in 1:49[4/5]. Stephen A. Calder's Office Queen finished second in the $60,800 event, half a length in front of Luminous Lagoon.
MOTOR SPORTS—BOBBY ISAAC of Catawba, N.C., wheeling a 1970 Dodge, weathered 91� heat and a rough track to win the Nashville 420 Grand National stock-car race by two laps over factory teammate Bobby Allison, averaging 87.830 mph over the five-eighths-mile circuit to gain the season's NASCAR point lead.
ROWING—DR. LARRY KLECATSKY of the New York Athletic Club pulled to a two-length victory in the senior 155-pound singles at the 88th annual Royal Canadian Henley Regatta at St. Catharines, Ontario, then came back an hour later to win the association singles against six heavyweight scullers, stroking to a two-length lead in the last 300 meters and crossing the finish line at 30 strokes to the minute in 7:13.2.
SAILING—Winds gusted up to 60 knots, waves boiled to 10 feet, sails and masts snapped and many crewmen were violently seasick in the wildest-ever Chicago-to-Mackinac race across Lake Michigan. Only 79 of 167 boats finished, and when it was all over the new DORA, a 55-footer owned and skippered by Lynn Williams of Elk Grove Village. Ill., was declared winner on a corrected time of 34:39.09 for the 333-mile run, best time for the event since 1912. Teddy Turner's American Eagle, the scratch boat, finished second.