Red Bull has confirmed that it will field Antonio Felix Da Costa and Carlos Sainz Jr for F1's Young Driver Test, which will take place at Silverstone next month.
Da Costa will be at the wheel of the RB9 for the opening two days of the test as he gains further experience of F1 machinery, having driven for the team in the Young Driver Test in Abu Dhabi last year – where he topped the times on day two.
The Portuguese racer also ran with Force India during the same test at Yas Marina back in 2010 and has filled in as third driver for Red Bull in both China and Canada this year while regular third driver Sebastien Buemi has been busy with his Toyota sportscar commitments.
Sainz, the son of former WRC title winner Carlos, will be making his first appearance in F1 machinery when he takes over at the wheel for the final day of running.
The 18-year is currently competing in GP3 and took his maiden podium finish in the most recent event in Valencia to sit sixth in the championship standings.