McLaren young driver Stoffel Vandoorne dominated proceedings as he stormed to two victories in Formula Renault 3.5's visit to Moscow.
Vandoorne secured pole position for the opening race and controlled the 33 lap affair, finishing comfortably clear of Red Bull junior driver Antonio Felix da Costa, who was suffering from an exhaust problem.
Championship leader Kevin Magnussen could manage only eleventh and thus saw his advantage over Vandoorne slashed to just four points.
The race was marred by a heavy accident for Lucas Foresti, who rolled his Comtec machine after making contact with Nikolay Martsenko, an incident which ruled Foresti out of the second race.
Vandoorne completed his pole and win double in the second race, finishing 11.7s clear of fellow McLaren youngster Magnussen to snatch the championship lead away from his rival.
Da Costa qualified in the midfield and was forced to retire early on, meaning that the Portuguese driver is now an increasingly distant threat in the championship.