England have moved on to 171-4 at tea on day three of the second Ashes Test against Australia at Lord's.
The hosts have extended their advantage to 404 runs after resuming on 114-3.
However, the third umpire ruled that the ball had not carried and the batsman stayed in before going on to make 16.
Meanwhile, Root remained in control out in the middle and finished three runs shy of a century ahead of the final session of the day.
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