Jerez day four – Button ends test on top

McLaren’s Jenson Button leapt to the top of the timesheets, as the latest four-day test in Jerez drew to a close on Saturday. Button lapped the Spanish circuit in 1m 18.871s to finish over two-tenths of a second ahead of Robert Kubica in the Renault.

The British driver spent the day evaluating set-ups and assessing tyre durability in the MP4-25, and covered 108 laps. Kubica, meanwhile, completed 117 laps, as he carried out long runs in the R30…