Renault junior Jack Aitken took over from ART team-mate and Mercedes protege George Russell at the top of the times on the second day GP3 pre-season testing at Estoril.
Author
Ida Wood
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George Russell started life as an official Mercedes junior in style by topping day one of GP3 pre-season testing at Estoril.
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Norman Nato ended the final day of testing for the rebranded Formula 2 series on top, with a 1m27.834s set during the morning session in Barcelona.