Simplify the following text for a Grade 6 native English-speaking person.
Original: A.J. Foyt , Al Unser and Rick Mears each won the Indianapolis 500 four times on the traditional oval , and Jeff Gordon has also won four times on the oval in the Brickyard 400 .
Simplified: A.J. Foyt , Al Unser and Rick Mears each won the Indianapolis 500 four times on the traditional oval . Jeff Gordon has also won four times on the oval in the Brickyard 400 .