The 1:22.544 was faster than the best time set in last months Barcelona test, showing an improvement in the RB7. The fastest lap came on a simulated qualifying run, so a single, all or nothing lap from the Australian.
The fast lap came in the morning session, with another lap just one tenth off in his next run. The afternoon programme for Webber saw him doing longer runs of 10 to 17 laps.
Second fastest went to the MP4-26 of Jenson Button, who was sporting a rather un-attractive zit on the nose of his car. Internet rumours say this is a device for measuring front wing flex. There are also rumours of more technical woes for the Woking team after Jenson pitted shortly after being show a pit board with 50 additional laps marked on it.
Lotus Renault claimed third and fifth in the standings, Vitaly Petrov taking third spot after jumping in the car as Nick Heidfeld fell down with a cold. Splitting the two black and gold clad drivers was Sergio Perez who was forced down to his second best time of the day following the suspected chicane infraction.
Force India also split the running, with Nico Hulkenberg taking the wheel for the morning session to get his first taste of a 2011 F1 single seat racer. He handed over to Paul di Resta for the afternoon. Hulkenberg took ninth spot while di Resta claimed sixth in the standings.
Team Lotus shared the running too, giving Davide Valsecci and Luis Razia a taste of the big leagues. The two GP2 drivers placing seventh and tenth respectively. Valsecci actually placed third early in the day before playing in the gravel and calling out the red flags.
Also bringing out the red rags was a Red Bull, or rather the Scuderia Toro Rosso (Team Red Bull in English.) Sebastien Buemi missed several hours of testing following a mechanical issue on the pit straight. He did manage 48 laps overall however, most of which were run in the afternoon.
On the distance stakes, Mark Webber covered the most distance during the course of the day. 97 laps passed under his RB7 with Perez just behind on 90 laps. Third in the distance charts was Jenson Button, Jerome d'Ambrosio was the only other driver to have the car to himself all day and came in fourth on miles munched.
The least distance came from the unwell Heidfeld, Petrov covered the second shortest distance with Razia covering the third shortest. they covered 20, 27 and 29 laps respectively.
Our timings once again are drawn from the AT&T Williams live timing. All times are unofficial. Mercedes, Williams, Ferrari and Hispania will not start their testing until tomorrow.