Swann added: "This kid was so easily playing with the full face of his bat out in front of his pad, reading the spin, reading the dip, I thought this lad was class.
He actually was being guided to a maiden Test century in that match by me.
While we were batting together I kept telling him: don't get out, don't go down the wicket, stay patient.
He didn't listen to his batting mentor, Graeme Swann, and went down the wicket and got out for 70!"
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Swann concluded: "Simply put, in my opinion, Joe Root is the best player England have ever produced."