Lewis Hamilton says there are "no more excuses" for Mercedes Formula 1 teammate Valtteri Bottas to be competitive through 2018 as he gears up for his second season with the team. Bottas arrived at Mercedes in January 2017 as a late replacement for world champion Nico Rosberg following his shock retirement, and took three wins through his first season with the German manufacturer en route to third place in the drivers' championship. A mid-season dip in form led to questions about Bottas' ability to take the fight to Hamilton, who went on to win a fourth drivers' championship, but the Finn is now ready for his second year with Mercedes, saying last month that he remains confident...
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