F1: LEWIS HAMILTON SETS THE FASTER LAP ON DAY 1 OF TRAINING

Lewis Hamilton with his Mercedes was the fastest at Circuit de Catalunya...Mercedes did all 152 laps with both drivers...Hamilton beat Sebastian Vetel by 0.113 seconds...Slower medium tyres were used by Ferrari and Mercedes went for the soft tyres...Red Bull and Mclaren hit a majour snag as they faced reliability issues...Lewis Hamilton's new driving partner Valterri Bottas came 6th..."It has been a good day, a positive day for the team," said Hamilton..."Lot's of laps and information gained so we can try to improve the car."...

On weather the new car changes have had any impact on driving he said "The G forces are definitely higher. The load on the drivers is a considerable amount more than before. It is a lot more physical."