Bahrain GP key to Hamilton`s championship title chances

London: Mercedes boss Ross Brawn has said Lewis Hamilton will have to prove that he is still a title challenger during the Bahrain Grand Prix this Sunday.

The fourth round of the Bahrain Grand Prix will be a definite ` proving ground` for the Brit racer. Stressing on the fact that Hamilton is expected to make the winning chances even stronger; Brawn has claimed that the team is very close to victory and that there is a great opportunity. Stating that in the Chinese Grand Prix the team could not follow the high-speed levels and keep balance, Brawn has said that he is positive that good drivers and good cars have filled the void and they are prepared to grab the opportunity lying ahead. ANI