Al Unser withstood a strong effort by Pete Halsmer to win the Cleveland 500 Indy-car race by nearly 25 seconds.

Halsmer, who never had before led an Indy-car race under the green flag, battled with the eventual winner through the last 42 laps of the 125-lap event . . .

At Daytona Beach, Jody Ridley led second-round qualifying for today's Firecracker 400 with a fast lap of 192.806 mph. A. J. Foyt crashed in qualifying and, although no hurt, was knocked out of the race. "My luck's been so bad lately I ought to go home and sleep it off," he said.

In Calabria, Italy, a car competing in a mountain championship race swerved off a road and hit a group of spectators yesterday, killing one woman and injuring her sister and two young boys.

Police said the Osella PA-7 BMW driven by Ugo Vidola of the Salerno Corse team left the road after 1.17 miles of the time trial.

Mauro Nesti won the 31st edition of the 12-kilometer Sila Cup, driving a Cebora BMW 2000 for the Abruzzo Corse team in a record 6 minutes 4.88 seconds at an average speed of 73.4049 mph.