'Finisher' Buttler keen to bat 'up the order' to score big tons

England wicketkeeper batsman Jos Buttler has expressed that though he is content in his role as a 'finisher', his ambition is to bat for 35-40 overs, and score big hundreds for the team.

Buttler would win his 50th one-day international cap in England's World Cup opener against Australia on Saturday.

Buttler said that he was ambitious to score bigger scores and didn't want to be pigeon-holed as someone who could only finish an innings, the BBC reported.

Admitting that though he is content in his role as finisher, the wicket-keeper batsman further said that he would want to be someone who could bat for 35 to 40 overs and get big hundreds, the report added.