Following changes to the conditions of this weeks Silverstone Young Driver Test set for 17-19 July, Infiniti Red Bull Racing has announced an amended driver line up.

Red Bull Junior Team driver Antonio Felix da Costa will drive in the morning on Day 1 and Day 2 (17 and 18 July)*, while Carlos Sainz Junior will take over for the final morning, Day 3 (19 July).

For the permitted tyre testing, Scuderia Toro Rosso driver Daniel Ricciardo will drive in the afternoon of Day 1, Mark Webber will drive in the afternoon of Day 2 and Sebastian Vettel will drive in the afternoon of Day 3.

 * Antonios test with Infiniti Red Bull Racing fulfills the teams commitment to grant the mid-season leader of the World Series by Renault a full days test in the RB9.