Hamilton cleared of blame after his car knocked over mechanic

SPA-FRANCORCHAMPS, Belgium, July 19 : Lewis Hamilton was cleared of blame after a Ferrari mechanic was knocked over by the seven-time Formula One champion's car during a botched Belgian Grand Prix pitstop on Sunday.The Briton had to serve a five-second penalty for a collision with Mercedes' George Russell before mechanics could change the car's tyres but Hamilton also wanted the front wing adjusting.As the mechanic stepped forward to change the setting, the tyre change was completed and the jack dropped, with the green light signal activated and Hamilton's front wheel then knocking the man over.Formula One stewards said after a hearing that Ferrari had acknowledged an unsafe release and attributed the error "to an inappropriately late instruction for the wing adjustment, a lack of clear co