Pre-season title favourite Romain Grosjean kicked off his campaign in style, winning from pole in the feature race, but leaves Turkey as joint championship leader following a double podium weekend for Britain's Sam Bird.

In part one of our three-part preview of the new GP2 campaign we're taking a look at the expected front-runners, including former Renault F1 man Romain Grosjean, Ferrari tester Jules Bianchi and British star Sam Bird.