The 18-year-old Uruguayan fought off a race-long challenge from Juncos Racing's Will Owen to claim his second win of the season

After losing his lead at the start, Buret recovered it quickly, then controlled the remainder of the 30-minute race to claim an accomplished first win of the season for Indianapolis-based defending champion team Juncos Racing.

Malaysian Weiron Tan holds on to score his second win of the season for Andretti Autosport and vault from sixth to third in the championship standings.

The Pro Mazda competitors this weekend will contest a triple-header on the Indianapolis Grand Prix circuit, including a make-up race following postponement of the scheduled second race last month at NOLA Motorsports Park in Louisiana due to severe weather.

Alberico's latest victory, added to a fourth-place finish yesterday, enabled him to stretch his championship lead to eight points, 130-122 over second-place finisher Santi Urrutia