Santiago Urrutia won the Indy Lights Legacy 100 Sunday at Barber Motorsports Park.
The 19-year-old Uruguayan became the fifth winner in as many races for the series this year.
Urrutia moved from third place to the lead in the first four laps and controlled the rest of the 50-minute race. He won the Pro Mazda Championship last year.
Pole-sitter Ed Jones, who won Saturday's race, finished second and took over the championship lead. Fellow Englishman Dean Stoneman claimed his first podium finish for Andretti Autosport.
Urrutia took the checkered flag 4.2437 seconds ahead of Jones.