Ponting says Australia 's middle - order batsmen must work a lot harder against spin bowling or hopes of a fourth consecutive World Cup title are over .
Ponting made 57 in his first innings since breaking his finger in the Boxing Day Test .
Ponting , who made 57 in his first innings since breaking his finger in the Boxing Day Test , says Australia 's middle - order batsmen must work a lot harder against spin bowling or hopes of a fourth consecutive World Cup title are over .