Red Bull have confirmed that they will demote Liam Lawson and replace him with Yuki Tsunoda with immediate effect.
The decision comes after Lawson had completed just two grands prix for Red Bull, and three months after Tsunoda was passed over for the New Zealander as a replacement for Sergio Perez.
Tsunoda will partner Max Verstappen at Red Bull from the next race in Japan on 4-6 April, while Lawson will return to second team Racing Bulls as team-mate to French rookie Isack Hadjar.
Red Bull team principal Christian Horner said in a statement: "It has been difficult to see Liam struggle with the RB21 at the first two races and as a result we have collectively taken the decision to make an early switch.