MARATHON—Defending champion STEVE JONES of Wales won the Chicago Marathon in a course-record time of 2:07:13, just one second off Carlos Lopes' world mark. JOAN BENOIT SAMUEL-SON, competing in her first marathon since she won the gold medal at the 1984 Olympics, was first among the women in 2:21:20.
MOTOR SPORTS—NIGEL MANSELL of Britain, driving a Williams- Honda, beat Keke Rosberg of Finland, also in a Williams- Honda, by 2.52 seconds to win the South African Grand Prix in Kyalami. Mansell averaged 129.86 mph over the 2.5-mile Kyalami circuit.
Darrell Waltrip drove his Chevrolet Monte Carlo to an easy victory in a 500-mile NASCAR race in Rockingham, N.C., finishing .93 of a second ahead of Ron Bouchard's Buick Regal. Waltrip averaged 118.344 mph for 492 laps over the slick, 1.017-mile North Carolina Speedway.
TENNIS—PAM SHRIVER beat Catarina Lindqvist 6-1, 7-5 to finish first in a tour event in Stuttgart, West Germany.
Ivan Lendl defeated Henri Leconte 6-4, 6-4, 7-6 to win an indoor tournament and $45,000 in Sydney, Australia.
Jimmy Arias lost to SCOTT DAVIS 6-1, 7-6 at an indoor tournament in Tokyo, Japan.
Czechoslovakia, led by Hana Mandlikova and Helena Sukova, defeated the U.S. to win the Federation Cup 2-1 for the third straight year, in Tokyo. Kathy Jordan and Elise Burgin lost in singles but teamed up for a doubles triumph.
MILEPOSTS—REINSTATED: By the America II syndicate, as skipper for the New York Yacht Club's challenge for the America's Cup, JOHN KOLIUS, 33, who quit last month in a disagreement with the syndicate's management.
RETIRED: Because of a wrenched left ankle, the 4-year-old winner of the 1984 Travers Stakes, CARR DE NASKRA, who in 18 career starts won seven races and had six seconds and a third for earnings of $831,672. He will stand at stud at The Stallion Park in Millbrook, N.Y.
SIGNED: By the New York Giants, All-Pro corner-back MARK HAYNES, 26, to a one-year contract reported to be worth $400,000, ending a 93-day holdout.