Andretti, 74, won four times on the Long Beach street course, first when it was a Formula One race in 1977 and later three times when it was an IndyCar race.
The event this year is the second race of the season for IndyCar, whose current drivers include Mario's grandson
Mario Andretti was one of the most successful and versatile race-car drivers in history. He won NASCAR stock-car racing's Daytona 500 in 1967 and the
Andretti also won the Formula One series championship in 1978.