Australia aim to extend domination over England in 4th Ashes Test
Root himself has come under the microscope after making just 176 runs in six innings at a modest 29.33, numbers that pale in comparison with his Australian counterpart Smith.
The 28-year-old Smith, who began the series with a brilliant century in the first Test in Brisbane, followed it up with 239 in Perth and averages a whopping 142, one of the main reasons behind Australia's dominant show.
England have been in touch briefly during the three games but were not able to grab their moments, .
They will, however, take heart from the fact that they won at the MCG as recently as in 2010, though that will be tempered by the knowledge that Smith has made a century in each of his last three Boxing Day appearances in Melbourne.