England gave a debut to former Ireland seamer Boyd Rankin in a side featuring only four survivors from the side that lost the Champions Trophy final to India at Edgbaston on Sunday, a match reduced from 50 overs per side to 20 because of rain in Birmingham.
The four survivors were Morgan, captaining the side in the place of the rested Stuart Broad, all-rounder Ravi Bopara, wicket-keeper Jos Buttler and off-spinner James Tredwell.
Former Ireland internationals Morgan and Rankin were among five overseas-born players in England's XI including Michael Lumb and Jade Dernbach (South Africa) and Ben Stokes (New Zealand).
This match and Thursday's second and final T20 at The Oval, constituted a 'hangover' from a New Zealand tour, featuring a Test series won by England and a one-day series won by the Black Caps, both completed before the Champions Trophy got underway.
New Zealand brought in batsman Tom Latham, seamer Ian Butler and spinner Roneel Hira for their first matches of the tour.
Martin Guptill, who scored back-to-back hundreds against England in the one-day series, was not considered due to a hamstring injury he suffered in a warm-up match against Kent while pacemen Kyle Mills and Doug Bracewell were the other members of the squad omitted from New Zealand's final XI.
Teams:
England: Alex Hales, Michael Lumb, Luke Wright, Eoin Morgan (capt), Ravi Bopara, Jos Buttler (wkt), Ben Stokes, Chris Woakes, James Tredwell, Jade Dernbach, Boyd Rankin
New Zealand: Hamish Rutherford, James Franklin, Brendon McCullum (capt/wkt), Ross Taylor, Tom Latham, Colin Munro, Nathan McCullum, Corey Anderson, Ian Butler, Roneel Hira, Mitchell McClenaghan
Umpires: Rob Bailey (ENG) and Richard Illingworth (ENG)
TV umpire: Tim Robinson (ENG)
Match referee: Javagal Srinath (IND)