England captain Joe Root has to be "harder on himself" according to former skipper Nasser Hussain.
The Yorkshireman's highest score during the Ashes has been the 67 he racked up in Adelaide. Australia captain Steve Smith meanwhile made a whopping 239 at the WACA in Perth and has been a constant thorn in the tourists' side.
After notching another half-century Melbourne, 26-year-old Root has now hit 34 fifties and 13 hundreds from 64 Tests. In comparison, Smith has registered 21 fifties and 22 centuries.
And Hussain thinks Root may need to tweak his own mentality to improve his conversion rate and become as good as his opposite number in the Australian team.
"The greatest batsmen – guys like Virat Kohli and Steve Smith – have excellent conversion rates," the former captain wrote in the Daily Mail.
"They grasp the simple fact that you don’t win Tests with pretty 50s and 60s: you win them with big hundreds or even doubles.
"At some point, Root is going to have to sit down and ask himself whether he’s working out those percentages properly.
"He’s got all the shots in the world. But if he wants to be remembered as one of the greats – and he has the talent – then he’ll need to be harder on himself."
Hussain also mentioned how Root can learn from left-handed England opener - and the man he replaced as skipper - Alastair Cook, who scored a magnificent unbeaten double hundred in the Boxing Day Test.
"You could hardly get two more different batsmen," he added. "Cook has always had a dodgy technique, whereas Root’s is almost flawless.
"It will be up to him [Root] now to work out which way he wants to go. Does he want to keep making attractive 60s and walking off furious with himself, or does he want to take a leaf out of Cook’s book and go for the jugular?"