Unser led over half the laps in three of his Indy 500 victories, and his 644 total laps at Indianapolis is most in race history. He led the final lap of the 1987 race to tie Ralph DePalma’s 75 ...

Winner of this year's Indy 500, Helio Castroneves, right, gathered with other four-time winners, from left, A.J. Foyt (1961, 1964, 1967, 1977), Al Unser (1970, 1971, 1978, 1987) and Rick Mears ...

Legendary race car driver Al Unser Sr. died Thursday at his home in Chama, New Mexico, the president of the Indianapolis Motor Speedway (IMS) announced. He was 82 years old and had been battling ...

Al Unser won the race in 1970, 1971, 1978 and 1987. The Unser family tradition stretched to Al Unser's son, Al Unser Jr., who won the Indy 500 in 1992 and 1994. There was no one else like him.

The Colorado-born racer was part of a racing family that includes his son Robby, nephew Al Unser Jr. and his brother Al, who is one of just three drivers to have won the Indy 500 four times.

Younger brother Al Unser is one of only three drivers to win the Indy 500 four times — 1970, 1971, 1978 and 1987. The Unser family tradition stretched to Al Unser’s son, Al Unser Jr., who won ...

Al Unser is one of only three drivers to win the Indy 500 four times — 1970, 1971, 1978 and 1987. The Unser family tradition stretched to Al Unser’s son, Al Unser Jr., who won Indy in 1992 and ...

Unser led over half the laps in three of his Indy 500 victories, and his 644 total laps at Indianapolis is most in race history. He led the final lap of the 1987 race to tie Ralph DePalma’s 75 ...

Indy 500 legend Al Unser Sr. dies at age 82. Unser is seen here celebrating his Indy 500 win in 1987. George Tiedemann/Sports Illustrated/Getty Images ...

Indy 500 winner, Helio Castroneves, right, gathered with other four-time winners, from left, A.J. Foyt (1961, 1964, 1967, 1977), Al Unser (1970, 1971, 1978, 1987) and Rick Mears (1979, 1984, 1988 ...

Unser won the Indy 500 in 1970, 1971, 1978 and 1987. He's also the only driver with both a sibling and a child who also won the 500. His namesake son, Al Unser Jr., is a two-time winner.