England take inexorable control of the fourth Test at Old Trafford thanks primarily to Joe Root's faultless 38th Test hundred. In the course of it he went past Jacques Kallis, Rahul Dravid and Ricky Ponting to become the second highest run scorer in the history of Test cricket. Only the incomparable Sachin Tendulkar has more (about 2500 more.) Simon Hughes and Deep Dasgupta assess the day and India's legendary batsman Sunil Gavaskar gives his verdict on Root's monumental achievement.

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