Jofra Archer was rewarded for his consistency when he was named in England's 15-man squad for the upcoming World Cup.
Barbados-born Archer qualified for England in March and has only three ODIs under his belt.
He edged out left-arm quick David Willey, a veteran of 46 ODIs, after both pacemen featured in England's 4-0 series win at home to Pakistan.
“We’ve seen Jofra Archer play against Pakistan and we’ve seen the skills he has,” Smith told Sky Sports News.
“It’s pretty straightforward. He’s an outstanding talent, that’s clear to all of us. He has pace, bounce, skill.”
There was no place also in a squad for back-up spinner and batsman Joe Denly, with Hampshire slow left-armer Liam Dawson earning a call-up.
Both Denly and Willey were named in England's provisional squad, as was opener Alex Hales.
James Vince came in the squad after England decided against selecting Hales following his ban for recreational drug use.
England are strong contenders to win the World Cup for the first time.
They now have two warm-up matches, against Australia in Southampton on Saturday and Afghanistan at The Oval on Monday before starting the tournament against South Africa on May 30.
Eoin Morgan (Middlesex, capt), Moeen Ali (Worcestershire), Jofra Archer (Sussex), Jonny Bairstow (Yorkshire), Jos Buttler (Lancashire, wkt), Tom Curran (Surrey), Liam Dawson (Hampshire), Liam Plunkett (Surrey), Adil Rashid (Yorkshire), Joe Root (Yorkshire), Jason Roy (Surrey), Ben Stokes (Durham), James Vince (Hampshire), Chris Woakes (Warwickshire), Mark Wood (Durham)