Britain's only triple F1 world champion believes his record is on borrowed time after Mercedes driver's storming start to season.
Kiwi driver Scott Dixon's struggling IndyCar campaign roars into life with a win at the Long Beach Grand Prix.
Hamilton 16-year-old Josiah Natzke has finished a respectable fifth in his EMX125 debut in Italy.
Ferrari make a race of it snatching second at the end, but F1 world champ too good with pole-to-flag victory.
New Zealand driver Mitch Evans' aggressive approach comes unstuck as he finishes down the order in Bahrain.