Sam Curran took five wickets before England captain Eoin Morgan and Joe Root both hit unbeaten fifties as the 50-over world champions cruised to a series-clinching win over Sri Lanka in the second one-day international at the Oval on Thursday.

England finished on 244-2 with exactly seven overs to spare for an eight-wicket success that put then 2-0 up in a three-match campaign ahead of Sunday’s finale in Bristol.

Morgan was 75 not out – only his second fifty in 17 international innings – whereas Test skipper Root’s unbeaten 68 followed his 79 not out during Tuesday’s five-wicket win in the series opener at Chester-le-Street.

The third-wicket pair shared an unbroken stand of 140.

Player-of-the-match Curran, starring on his Surrey home ground, set up the victory with an ODI best 5-48 – his first five-wicket haul in all international cricket.

Fellow left-arm paceman David Willey (4-64) was the only other bowler to take wickets in Sri Lanka’s 241-9.

“It was really special to get my first five-for and to be playing in front of fans as well,” the 23-year-old Curran, appearing in just his 10th ODI, told Sky Sports.

“I feel like I have played a lot of cricket but I’m learning from every game I play and learning from other players.”