SAKHIR, Bahrain >> Defending champion Lewis Hamilton won the Bahrain Grand Prix from pole position on Sunday to strengthen his overall lead in the Formula One standings with his third win in four races this season and 36th of his career.The British driver started from pole for the first time in the desert race under floodlights and was largely untroubled, finishing ahead of Ferrari's Kimi Raikkonen and his Mercedes teammate Nico Rosberg, whose braking problem with two laps remaining let in Raikkonen.