Nico Rosberg says he doesn't think improving his performances in qualifying are the key to beating Lewis Hamilton to the 2015 Formula 1 World Championship title.

The German held the advantage over his Mercedes team-mate in qualifying 11-7 last season, but has been comprehensively out-performed on Saturdays in 2015, with Hamilton starting from pole position in 10 of this year's 11 races so far.

With Rosberg struggling to get the edge on Hamilton in the raceshaving won three to his team-mate's six, team boss Toto Wolff suggested Rosberg should turn his attention to 'getting half of the job done' in qualifying.

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However, it is an assessment that Rosberg doesn't agree with, maintaining that his focus on improving his race craft is his main goal in 2015, something he feels will eventually benefit him.

"Well if you look at the first half of the year, I only narrowly missed out. In Hungary there were even times where I was leading the championship. There was not much in it.

"So yes, for sure of course it would help to be in front more often than not, like last year, definitely but then last year sometimes I lacked a bit of race craft and lost out.

"This year if I keep on going strongly in that area then yeah, I can make it happen even if I am second most the time in qualifying."

Hamilton's win in the Belgian Grand Prix has seen him swell his lead over Rosberg to 28 points.