Los Angeles - Ryan Hunter-Reay ended a 42-race IndyCar winless streak on Sunday, charging from 10th place on the starting grid to win the second race of the weekend's double-header in Detroit.
Andretti Autosport driver Hunter-Reay beat Indianapolis 500 winner Will Power by 11.3549sec, notching his first IndyCar series victory since a triumph at Pocono in August of 2015.
Hunter-Reay led 18 of the 70 laps on the 3.78km, 14-turn temporary street course at Belle Isle Park.
He seized the lead seven laps from the finish when team-mate Alexander Rossi, who had captured pole in morning qualifying, skidded into a runoff area.
Australia's Power finished second in his Penske, regaining the lead in the series standings ahead of New Zealand's Scott Dixon.
Dixon, who won the first race of the double-header on Saturday, finished fourth on Sunday.
Rossi, whose left front tire shredded as Hunter-Reay grabbed the lead, made it around to the pits for fresh tires and finished 12th. He dropped from first to third in the standings with 297 points with Hunter-Reay fourth on 278.
Chip Ganassi Racing's Ed Jones finished third, earning his second podium of the year and first since Long Beach.
The start of the race was delayed after the pace car, driven by General Motors executive Mark Reuss, slammed into the wall in turn two. Reuss was not injured.