Ireland captain Andrew Balbirnie savoured a momentous victory over England as "one we'll remember forever" after overcoming the world champions in a nail-biting conclusion at the Ageas Bowl.
Tons from Paul Stirling and Balbirnie in a 214-run stand in the third one-day international laid the foundations for a chase of 329, the same score Ireland reached in famously beating England at the 2011 World Cup.
But Ireland were still left needing 50 from the final 33 deliveries when Balbirnie holed out for 113 – soon after Stirling had been run out for 142 – and there were plenty of nervy moments thereafter.
"Paul Stirling had a day out and he has the ability to do that. He's as dangerous an opening batsman as we play against. I know guys do not like bowling at him," Morgan said.
"Ireland played really well and thoroughly deserved to win."
Morgan, who did not take the field for Ireland's reply because of what he said was a minor groin strain, was nevertheless pleased with how an England side missing several World Cup winners have fared.
"It's been an extremely positive series. We don't take winning series for granted. (The defeat) is a kind reminder of how easily you can lose games when you have an average day," he said.
"I don't think we've lost a series since 2017 and to do it with a side as inexperienced as it is, particularly with the seam bowling line-up, is a huge positive."
