(AP Photo/Claude Paris)
MONACO (AP) Finishing fastest in both of Thursday's practice sessions for the Monaco Grand Prix isn't enough to get Nico Rosberg too excited. He knows Mercedes has yet to prove it can last the pace on race day.
The German driver clocked a time of 1 minute, 14.759 seconds to finish .318 in front of teammate Lewis Hamilton and .437 ahead of Ferrari driver Fernando Alonso in the second session. The times were generally faster than in the first session.
But having taken pole position in the past two races and failed to finish in the top five, Rosberg is wary about reading too much into qualifying and practice speeds. Hamilton topped the grid at the Chinese GP three races ago, and Mercedes secured a 1-2 in qualifying two weeks ago in Spain - but neither driver has won a race yet.