Marco Sorensen claimed his first GP2 victory from pole position after controlling the sprint race at the Sochi Autodrom.
Sorensen led cleanly off the line but soon had Stoffel Vandoorne for company on the run down to Turn 2 after the Belgian had made an excellent start from fourth. Vandoorne ran wide into Turn 2 and let Sergio Canamasas back into second, while newly-crowned GP2 champion was relegated to the back of the field after being sandwiched between Andre Negrao and Raffaele Marciello.
With Canamasas fending off Vandoorne behind, Sorensen looked comfortable in the lead. With overtaking opportunities at a premium Mitch Evans caught the leading trio, who were soon covered by less than two seconds. Evans was released into third when Canamasas pulled up on lap 12 with an electrical fault.
As with Saturday's feature race, the safety car was soon required, with Marciello sustaining a puncture and sliding into the barriers at Turn 7 after an entertaining tussle with Artem Markelov and Stefano Coletti. The safety car remained for three laps and bunched the field back up, ensuring there would be a two-lap sprint to the line.
Sorensen managed the restart well and led Vandoorne through Turn 2 but Felipe Nasr, who missed out on the championship on Saturday, got a run on Evans and surged past for the final spot on the podium. Vandoorne had just two laps and he applied the pressure to Sorensen but the Dane was in complete control, bringing the car home for his and MP Motorsport's first victory in the series.