Tommy Hinnershitz won the AAA Eastern Sprint Car race at the Trenton International Speedway, Trenton, NJ.
A.J. Foyt won the Hut Hundred USAC Midget race over Arnie Knepper and Roger McCluskey at the Terre Haute Action Track, Terre Haute, IN.
Dick Tobias won the Super Modified race at the Williams Grove Speedway, Williams Grove, PA. Johnny Mackison was second followed by Johnny Dubendorf, Moe Harden and Dizzy Dean.
Richard Petty won his tenth straight NASCAR Grand National stock car race, at North Wilkesboro.
A.J. Foyt won the USAC sanctioned Daily Empress Indy Silverstone on the 2.932-mile road course Silverstone Circuit in Silverstone, England. Rick Mears was second followed by Tom Sneva, Gordon Johncock and Johnny Rutherford.
Cale Yarborough won the NASCAR Winston Cup Wilkes 400 over Darrell Waltrip at the North Wilkesboro Speedway, North Wilkesboro, NC.
Richard Petty announced that he will retire after the 1992 NASCAR Winston Cup season.