Tom Chilton claimed his first victory of the season in the opening World Touring Car Championship race in Argentina
Chilton started second on the grid and took the lead from polesitter John Filippi into the first corner and maintained it throughout the race, building a comfortable lead over closest challenger Rob Huff who finished second.
Huff stole second from Filippi as the Frenchman ran wide at Turn 1, with Filippi continuing to drop back to eventually finish 10th.
Yvan Muller was third for Citroen ahead of the Honda of Tiago Monteiro in fourth.
In sixth, seventh and eighth were Norbert Michelisz, Tom Coronel and Mehdi Bennani respectively - all of whom were engaged in a tight battle and continually swapped places over the course of the 13-lap race.
Ninth place was taken by James Thompson ahead of polesitter Filippi.
It was a race to forget for debutant Esteban Gurrieri who suffered a gearbox failure and retired in the hope of salvaging the car for the main race.
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