Mercedes' Lewis Hamilton and teammate Valtteri Bottas

Lewis Hamilton heaped praise on his Mercedes team on Friday after he and team-mate Valtteri Bottas dominated practice ahead of this weekend's Spanish Grand Prix. On a blustery day at the Circuit de Catalunya, the three-time world champion proved he has bounced back from a puzzling loss of pace that left him struggling to fourth in last month's Russian Grand Prix won by Bottas, who claimed his maiden success in Sochi.