CASTE: Manly Steeplechase H., 2 m., by 1 length, in 4:00, William DuPont Jr. estate, Fair Hill, Md.
ARCANDY: $28,700 Midwest H., 6� f., by head, in 1:15[3/5], Hawthorne. John Sellers up.
ALCIDE: St. Leger, 1 m. 6 f. 132 yds., by 8 lengths, in 3:06.4, Doncaster, England. Harry Carr up.
HORSE SHOW—SETTING SUN: Tennessee Walking Horse World championship. Owned by M. M. Bullard, Newport, Tenn., ridden by Sam Paschall, at Shelbyville, Tenn.
INTERNATIONAL MOTOR SPORTS—CHUCK DAIGH and Lance Reventlow, in Scarabs, one-two in 115.5-m. Meadowdale feature, Carpentersville, Ill. Daigh averaged 85.55 for 35 laps.
Walter Hansgen, regional SCCA 45-min. sports-car race, in D Jaguar, with 81.5 average, Bridgehampton, L.I.
Speedy Thompson, 100-m. NASCAR, in 1957 Chevrolet, with 58.5 average for 1:43.20.
Nelson Stacey, Dayton 500 for late model stock cars, in 1957 Chevrolet, 270 miles in 3:25.
LAWN BOWLING—PETER PURDEN and ROBERT SAVAGE, first United States doubles championships, in five-team round robin, Buck Hill Falls, Pa.
TENNIS—BILLY KNIGHT of Britain, upset over Luis Ayala, Chile, 6-3, 8-10, 7-5, 6-4, at international invitation tournament, Toronto.