Germany's Nico Rosberg of Mercedes will start on pole position in Sunday's Monaco Grand Prix after posting the fastest time in Saturday's qualifying session. Rosberg's Mercedes team-mate Lewis Hamilton will start from second on the grid with Germany's reigning triple world champion Sebastian Vettel third in his Red Bull. "It definitely could have been easier," said Rosberg, who was quickest in Thursday's free practice sessions in the Mediterranean principality where he spent his youth.