The final week of pre-season tests began today - held in Barcelona instead of Bahrain as originally planned, due to the unstable political situation in the Country.
Red Bull's Mark Webber set the fastest time of the day, which was faster than anyone managed to acheive at the track a month ago.
Second was Jenson Button, although he was quick to admit that his McLaren team will not be quick enough to compete with Ferrari or Red Bull in the first race in Australia in under three weeks time.
Vitaly Petrov took third for Lotus-Renault, running in the afternoon in place of his team mate Nick Heidfeld who only drove in the morning due to suffering from a cold.
At the close of the session, it appeared that Sauber's Sergio Perez would take the headlines with a blistering time, significantly quicker than Webber's, however it later emerged that the Mexican had cut the chicane, and therefore the time would not count.
For more details on today's session, visit www.autosport.com