The Duchess of Westminster's ARKLE, an Irishbred 7-year-old gelding, took the lead on the final jump of the 21-obstacle course to win the 3�-mile Gold Cup steeplechase by five lengths over Mill House in Cheltenham, England.
Calumet Farm's double-barreled entry of KY. PIONEER ($3.60) and Kentucky Jug finished first and second in the seven-furlong Hutcheson Stakes for 3-year-olds at Gulfstream Park, Fla.
PLATFORM TENNIS—Second-seeded KIM KIMBERLEY and DAVID JENNINGS of Wilton, Conn. overpowered Thomas Holmes and Michael O'Hearn 6-3, 6-1, 6-2 in the finals to win the U.S. doubles championship in Darien, Conn. Earlier in the week MRS. S. WARREN LEE of Short Hills, N.J. and MRS. W. BRADFORD BRIGGS of Darien, Conn. successfully defended the women's title with a 4-6, 6-2, 6-1 defeat of Mrs. Rawle Deland and Mrs. William Wasch in Scarsdale, N.Y.
SKIING—For the fourth successive year DENVER captured the NCAA championship. Dartmouth, the host team, was runner-up.
SPEED SKATING—At the Russian women's championships in Sverdlovsk INGA VORONINA, fully recovered from the stomach ailment that kept her out of competition for several months, won the title for the third consecutive year as Lidia Skoblikova, who took four firsts for the U.S.S.R. in the Olympics and went on to sweep the women's world championships in Kristinehamn, Sweden, failed to win a single event.
SWIMMING—At the Big Ten championships in Minneapolis, INDIANA won nine of the 17 events and gained the team title for the fourth straight year with an overwhelming 223� points. Michigan, with four victories and 171� points, was runner-up.
TENNIS—Unseeded RON HOLMBERG of New York upset top-seeded Roy Emerson of Australia 6-2, 6-4, 9-7 to win the singles title in the Altamira international tournament in Caracas, Venezuela.
TRACK & FIELD—Home-town favorite TOM O'HARA (see page 68) sprinted the mile in 3:56.4 at the Chicago Daily News Relays, lowering by .2 second the world indoor mark he set just three weeks earlier at the New York AC meet. In less distinguished performances BOB SCHUL took the two-mile (8:48.2), BILL CROTHERS the 1,000-yard (2:07.6), GEORGE KERR the 600 (1:10.6), JOHN THOMAS the high jump (6 feet 10 inches) and C.K. YANG and HENRY WADSWORTH both cleared 16 feet for a tie in the pole vault. At New York's IC4A championships VILLANOVA edged Manhattan by one point for the team title, and in Columbus, Ohio, MICHIGAN captured the Big Ten championship.
MILEPOSTS—SIGNED: JOHNNY DEE, 40, a Denver lawyer and former head basketball coach at Alabama (1953-1956), to succeed Johnny Jordan as coach at Notre Dame.
ORGANIZED: A new professional football league: the NorthAmerican Football League, with San Antonio, Indianapolis, Memphis, and Seattle as charter members. The four other franchises will probably come from a group including Jacksonville, Atlanta, Birmingham, Louisville and New Orleans. George E. Ashburn of Houston, temporary president, hopes to begin league play in September.