round four of the 2015 formula one season takes place at the sakhir circuit for the bahrain grand prix .
bahrain was the first country from the middle-east to hold a world championship grand prix in 2004 .
fernando alonso is the most successful driver in sakhir having won three times in the desert .
lewis hamilton looks for second win in bahrain in bid to make it three out of four victories in 2015 season .
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