Lewis Hamilton was fastest again in second practice ahead of the Chinese Grand Prix, in an eventful session marked by a spectator running on track.
Hamilton, fastest on Friday morning, set a best time of 1:37.219 – nearly two seconds quicker than his time in opening practice – on the soft Pirelli compound tyres to top the session.
There were bizarre scenes just 20 minutes in when a spectator crossed the start-finish straight, running between two cars, before scaling the pit wall where he was apprehended by circuit security.
Kimi Raikkonen was second fastest for Ferrari, four tenths shy of Hamilton, while Daniel Ricciardo ended the day third for Red Bull.
The Australian spent the opening 45 minutes of the session confined to the garage, but rallied late on to post an encouraging 1:38.311 on the soft tyres, albeit a second off the reigning champion.
Malaysian Grand Prix winner Sebastian Vettel was fourth, despite an early spin at Turn 3, ahead of Nico Rosberg, who was a disappointing fifth, after a scruffy flying lap, and a close call with Raikkonen at Turn 1.
Daniil Kvyat ended a torrid afternoon session sixth for Red Bull, as the Russian crashed with a brake issue at Turn 14.
Valtteri Bottas was seventh for Williams, while his team-mate Felipe Massa prompted a brief red flag after suffering a rear wing stall at the same spot as Kvyat’s off, damaging the new front wing on the Williams, and ending the day a lowly 18th.
Felipe Nasr and Romain Grosjean were eighth and ninth for Sauber and Lotus respectively, while McLaren enjoyed its best session of the season so far, with Jenson Button in 10th and Fernando Alonso in 12th.
Lotus’ Pastor Maldonado spilt the McLarens in 11th, with Marcus Ericsson 13th for Sauber, ahead of the two Toro Rossos of Max Verstappen and Carlos Sainz Jr.
The Force Indias of Nico Hulkenberg and Sergio Perez sandwiched Massa in 16th and 18th, while Roberto Merhi beat his Manor team-mate Will Stevens to finish 19th.
The Briton, who is still yet to start a race in 2015, lost a lot of time to an engine problem, and rounded out the order in 20th.
Image courtesy of Daimler