Nyck de Vries has been shown a 'yellow card' and needs to improve, but the Dutchman will not yet be ousted. That is the word from Dr Helmut Marko, the architect of Red Bull's highly successful F1 driver program, following rumours a decision has already been taken to axe the 28-year-old rookie from Alpha Tauri. 'Nothing will happen in the next three races,' Marko, 81, told Sport1. 'But we have spoken to de Vries and he agrees with us – he needs to improve. The gap to his teammate Yuki Tsunoda, who is doing a great job, is too big. 'To use football jargon, Nyck got the yellow card but not the red card yet. If he improves, a driver change will not be an issue,' Marko added. But even if...
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