Red Bull has revised its testing programme for the Young Driver Test at Silverstone with Mark Webber
now no longer appearing on track in the RB9.
The Australian had been due to drive the car on Thursday afternoon to work on tyre development with Pirelli but will now not take part, leading to a change to the programme that was previously announced.
Red Bull insisted that the decision had been taken 'following a clarification of the permitted programmes from Pirelli and the FIA for this week's Silverstone test'.
Antonio Felix Da Costa will now drive the RB9 for a full day on Wednesday and will also be in action on Thursday morning before Daniel Ricciardo – who was due to appear this afternoon – then driving on Thursday afternoon.
That will come after Ricciardo drives his regular Toro Rosso
in the morning session, with Carlos Sainz Jr then in action in the afternoon.
Sainz will then share the RB9 with Sebastian Vettel