Sergey Sirotkin has given his flagging GP2 Series title hopes a major boost by claiming a dominant sprint race victory at the Hungaroring.

The Russian started sixth after finishing third in the sprint race, but a storming start would see him up to second position by the first corner behind Jordan King, who converted his reverse grid pole position into an initial lead.

With a pile-up at turn two - triggered when Arthur Pic spun into the path of the field - eliminating Nobuharu Matsushita, Alex Lynn and Luca Ghitto and prompting a safety car, a mistake by King at the final corner ahead of the restart would give Sirotkin the run on him into turn one.

With King defending hard, the pair would go side-by-side through turns one, two and three until the Russian finally nosed ahead at the turn four kink.

From here the ART driver - a pre-season title favourite - would cruise home for a long-awaited first win of the 2016 season, one that keeps him on the cusp of the title fight with five rounds remaining.

King held on for a lonely second, with team-mate Norman Nato making it two Racing Engineering drivers on the podium in third position.

Benefiting from the Turn 2 melee, Artem Markelov, Mitch Evans and Oliver Rowland progressed up the order to secure points in fourth, fifth and sixth, with race winner Pierre Gasly extending his advantage over Prema team--mate Antonio Giovinazzi in the standings by finishing seventh with the fastest lap.

Indeed, Giovinazzi's hopes of points were scuppered at the first corner when he out-braked himself and clipped Matsushita. With damage to his front-wing forcing him to pit, the Italian would also be given a penalty as punishment for the contact.