England's one-day captain Eoin Morgan is relieved that Joe Root is fit enough to play in Sunday's first 50-over match against Australia.
The 27-year-old Yorkshire batsman has recovered from a viral illness which forced him to be taken to hospital on the final day of the fifth Ashes Test in Sydney earlier this month.
He missed Thursday's warm-up win over a Cricket Australia XI but will be able to feature in Melbourne.
Morgan said: "Joe should be fit to play. He's a versatile player who can score in any strike-rate that is required.
"He's extremely important. He's been a fantastic leader within the group and, on top of that, there's the weight of runs he's scored and the manner that he's scored them."
Morgan has also hinted that Jonny Bairstow, Jason Roy and Alex Hales could all play in the first ODI, which England are 2.62 to win. An Australia victory can be backed at 1.50.
England (from): J Bairstow, J Roy, A Hales, J Root, E Morgan (c), J Buttler (wkt) M Ali, C Woakes, A Rashid, L Plunkett, M Wood, S Billings, J Ball, T Curran, D Malan, D Willey.
Australia (from): S Smith (c), P Cummins, A Finch, T Head, M Marsh, T Paine (wkt), J Richardson, M Starc, M Stoinis, A Tye, D Warner, C White, A Zampa.
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