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England keeper is having bad run with bat in South Africa• ‘We know what a world-class player he is’Paul Collingwood, England’s assistant coach, has backed Jos Buttler to thrive despite the wicketkeeper’s desperate Test series against South Africa.

Buttler, one of England’s best white-ball batsmen, looks physically exhausted and mentally drained after playing a leading role in last summer’s
World Cup win and the Ashes series that followed.