Liam Livingstone and Jacob Bethell flexed their muscles as England defied a shock five-wicket haul from part-timer Matthew Short to set up a T20 series decider against Australia on Sunday.
Travis Head's buccaneering half-century helped Australia to a 28-run victory in the first T20 against England on Wednesday.
England's hopes of an unbeaten Test home summer came crashing down at the Oval as Pathum Nissanka's unbeaten century handed Sri Lanka a deserved eight-wicket victory.
Ollie Pope shrugged off concerns over his form since stepping up as England's stand-in captain, cracking a century against Sri Lanka at Lord's on Friday.
Phil Salt will lead England in the forthcoming T20 series against Australia after Jos Buttler was ruled out injured.
Brendon McCullum will be the coach of England in all three formats from the start of next year, taking over from Matthew Mott as white-ball head coach.