Ben Foakes' unbeaten 61 on his ODI debut helped England recover from a top-order collapse to beat Ireland by four wickets in a one-off ODI in Dublin.
England, in reply to their chase of 199, collapsed to 66 for five at one stage.
They were still in trouble in a match at Malahide reduced to 45 overs per side by a wet outfield when teenage debutant left-arm quick Josh Little took his fourth wicket.
England were now 101 for six against an Ireland side who have not qualified for the World Cup.
But wicket-keeper Foakes and Tom Curran then shared an unbroken stand of 98 as England won with 18 balls to spare.
England were without two experienced top-order batsmen in the injured Jason Roy and the axed Alex Hales as the Nottinghamshire batsman reportedly failed a second test for recreational drug use.
James Vince and Dawid Malan, two of the batsmen looking to replace Hales in England's World Cup squad, opened the innings.
When Vince (18) pulled Little to mid-wicket, England were 34 for one.
New batsman Joe Root was soon out for seven, the England Test captain falling leg before to Murtagh.
Little struck again when he dismissed Eoin Morgan for a duck after the Dublin-born batsman could only fend a superb bouncer to Gary Wilson.
Earlier, Liam Plunkett took four for 35 in an Ireland innings where paceman Jofra Archer marked his England debut with a wicket.