Jenson Button was left to rue his poor qualifying performance in Monaco after failing to score for the third time this season.
The McLaren driver was only able to post the 13th quickest time in qualifying on the streets of Monte Carlo, although he started the race from twelfth thanks to the post qualifying penalties in place for Pastor Maldonado.
The Briton was lucky to escape a clash on the run to St Devote when Kamui Kobayashi clipped the car of Romain Grosjean and was launched into the air, landing just to the side of Button's McLaren and forcing him to run wide through the first corner.
That dropped him down to 14th place behind the Caterham of Heikki Kovalainen, with the McLaren driver then stuck behind the Finn through the opening stint. Although he then ran longer before pitting to change tyres, Button rejoined behind Kovalainen and then – having already suffered a spin while trying to get through at the Swimming Pool – was forced to retire when the pair touched at St Devote and he picked up a puncture.
“At the start, Kamui almost landed on top of me because he'd been launched off someone else,” he said. “Then I almost got stuck at the exit of Sainte Devote, but I just managed to squeeze through.
“After my stop, I got caught behind Heikki – we weren't really fighting, but if you position your car in the right place around here then it's impossible to overtake. That's quite frustrating when you're so much quicker than the guy in front.
“Finally, I had a look up the inside of turn 15, we touched, and I had a puncture. Game over. Today's result stems from a poor qualifying performance and being unlucky at the start. Also, when you start from the mid-grid, you're more prone to incidents.
“It wasn't my day today – but hopefully it will be sooner rather than later.”