cook hung his head in disbelief after wasting a golden opportunity to end his long wait for a century before the man who seems destined to succeed him as england captain showed how to do it .
but the problems cook had in finding fluency in his 211-ball 76 were put into stark perspective by yet another display of the rare class and maturity that has made joe root england 's outstanding batsman .
root smashes a short ball to the boundary as west indies keeper and captain denesh ramdin .