Christian Horner says a big factor in the decision to move Liam Lawson to Racing Bulls after just two races was because his engineers had become “concerned” by his mental state.

Christian Horner did not dismiss speculation that Yuki Tsunoda could replace under-fire Liam Lawson at Red Bull for the next F1 race in Japan. Lawson has endured a torrid opening two races as Max Verstappen’s teammate: he crashed out of the season-opening Australian GP and qualified last on the grid, twice, in China.

Liam Lawson opened up on the way he was informed about his Red Bull demotion over a phone call, effective from the Japanese GP.

Christian Horner claims that Liam Lawson would've taken too much time to settle which is why they roped in Yuki Tsunoda so early

Yuki Tsunoda is debuting for Red Bull Racing at this weekend's Japanese Grand Prix following the controversial decision to drop Liam Lawson just two rounds into the season