They will be relying on some fresh ideas and strategies set by Perth Scorchers bowler David Willey and Liam Plunkett for how to slow down the Aussie skipper.
Marsh continued his renaissance from the Test series with 50 from 66 balls, but was bowled by a cleverly disguised wrong'un from Rashid.
Root will be Eoin Morgan's No 2 for the next five one-day internationals with fire replacing sickness in his belly, especially as far some England players are concerned. Appearances in the World T20 final in 2016 and the ICC Champions Trophy semi-finals in 2017, while ultimately disappointing, have been steps in the right direction.
This match is Jos Buttler's 100th for England, and he was presented with a commemorative cap by James Anderson before play. "As a coach the one attribute he has is the ability to take the pressure away from any player at a time when you need it and that has helped me massively".
England's attack isn't as formidable but contains considerably more variety than their popgun Test arsenal led by quicks Mark Wood, Liam Plunkett and brilliant spinner Adil Rashid - the leading ODI wicket-taker of the past three years.
Juan Martin del Potro eases past Denis Shapovalov in Auckland Classic
In the doubles, Belarusian Max Mirnyi and Austrian Philipp Oswald will take on Austrian Oliver Marach and Croatian Mate Pavic.
In 2006-07, England were whitewashed 5-0 but went on to win the tri-series involving Australia and New Zealand.
England are now fourth in the one-day rankings - level on points with third-placed Australia and on the coat-tails of the top-two, South Africa and India - and are perfectly capable of achieving their dream of lifting the World Cup next year. The best way to address it is to be on the front foot. Ben Stokes is the exception, of course. The all-rounder will play no part in the ODIs as he waits to hear whether he faces any charges for the incident in a Bristol street in the early hours of 25 September. Going into the first one-day International, Alex Hales will once again start the proceedings for England after being suspended for last two one-day Internationals against West Indies.
"Joe is good and should be fit to play tomorrow", Morgan told reporters. "We will miss him but we know he is not going to be part of this series so we can address the balance of this side", he added.
"We got a huge amount of confidence from the selectors and Andrew Strauss, our director of cricket, gave absolute clarity in what we wanted".
Root will slot back in at No 3 leaving England to choose two from Jonny Bairstow, Jason Roy and the returning Alex Hales to open the batting at the MCG in the first game of the five-match series. "It creates a lot more calm around the periphery". An internal European Central Bank disciplinary hearing will not take place until Stokes's legal case has concluded, which has allowed Hales to return to worldwide duty.