Lewis Hamilton's first day of testing for his new Mercedes team got off to a bad start when he crashed after 15 laps because tof a braking problem.
.
The 2008 world champions lost control at the end of the back staraight at the Jerez circuit in southern Spain.
.
Hamilton was unhurt after ploughing acorss a gravel trap and into a tyre wall.
.
The team were unable to fix the car in time to run again, continuing a troubled start to their 2013 campaign.
.
'' I'm just glad that firstly i'm safe and that it's happened now, not when we're in the season or something ''.
So sad that had to happen at this stage.
He would be very disappointed