Lewis Hamilton's growing championship momentum showed no signs of abating on the opening morning of F1's return to action as the Mercedes driver set the Practice One pace for the United States GP.After a three-week break between races following Hamilton's fourth consecutive victory at the Russian GP which gave him a 17-point title lead over team-mate Nico Rosberg, it was the Briton who again had the initial intra-team edge at Mercedes on the opening morning at Austin's Circuit of the Americas.Hamilton, the inaugural winner at CoTA in 2012, was the only driver to lap the undulating circuit below 100 seconds with his benchmark effort of 1:39.941 nearly three tenths quicker than Rosberg's...
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