England must address the "very poor" attitude they displayed in a record-breaking defeat to Sri Lanka in Colombo on Tuesday, says Eoin Morgan.
Sri Lanka inflicted England's heaviest ODI loss with a 219-run triumph on the Duckworth-Lewis-Stern method after posting a monstrous 366-6 in the final match of the series.
Niroshan Dickwella was the top performer with 95 off 97 balls, while captain Dinesh Chandimal made 80 despite being put down twice early in his innings.
Morgan, who dropped himself and rested Chris Woakes and Olly Stone, felt being posed such a daunting challenge was useful for England, albeit their response - they slipped to 132-9 by the time rain arrived to end play early - disappointed him.
"For 50 overs we were under serious pressure and we didn't have a lot of answers. That gives us a good opportunity to go back and look at everything from preparation right down to the end result. That's always better when you've been put under a lot of pressure," said Morgan.
"We didn't take our game forward today. There were areas it went backwards. Our fielding was extremely poor, our attitude was very poor and that has to be addressed.
"We will break it down and find an answer because otherwise we're just papering over the cracks which is not what we want to do."
series wins in a row pic.twitter.com/Ls160EldQA— England Cricket (@englandcricket) October 23, 2018
Morgan backed his decision to include Sam Curran, Liam Plunkett and Mark Wood with England having already wrapped up a series victory and next year's Cricket World Cup on the horizon.
"Sam has only played his second ODI today," Morgan said. "If we're going to be serious about considering him as a potential replacement if David Willey is injured for the World Cup squad, we need to know more about him.
"Today we learned more about him. If Sam Curran's name goes down on that paper we know what his strengths and weaknesses are now, and we try to improve them as we go along.
"When you leave yourself out the one thing you don't want to compromise is winning the game - that's the best environment to learn from. But on the other hand, you want to see the players who come in be challenged and put under pressure. That's one thing we definitely saw today.
"People will say you don't want to see your bowlers hit all over the place, hit back over their head, but I think it's necessary to learn. When we go into the World Cup and play against the better teams they perform like that on a regular basis.
"It's not that you want to get used to it, but you want them to get used to the situation, and experience refocusing for the next delivery."
|Henry v Vieira: The Arsene Wenger proteges to move into coaching|
|Federer enjoys ´cat and mouse´ win over Evans|
|Wozniacki cruises through in Melbourne|
|Federer maintains perfect Australian Open second-round record|
|Warriors set NBA record, Butler´s 76ers rout Timberwolves|
|´I like the fact we beat them´ - 76ers´ Butler revels in win over Timberwolves|
|Murray says he´ll ´probably´ have operation|
|Australian Open tribute for Andy Murray surprises brother Jamie|
|Warriors score NBA record 51 points in first quarter against Nuggets|
|Panthers owner Tepper doesn´t rule out Newton missing 2019 because of shoulder injury|
|De Ligt will be world´s best centre-back – Koeman|
|Ronaldo a ´perfect machine´, says Gattuso|
|Barcelona? I can´t say anything - Stuani|
|Silva upbeat about Man City title chances|
|Celtics youngsters say Irving´s callout ´came from a good place´|
|NFL playoffs: Patrick Mahomes v Tom Brady|
|NFL playoffs: Jared Goff v Drew Brees|
|Sixers sign Brewer to 10-day contract|
|Lozano and Morgan scoop CONCACAF awards|
|Lakers ´optimistic´ about LeBron injury|
|Giants produce mammoth fourth quarter against Nymburk|
|Austin FC to join MLS in 2021|
|Henry, Vieira look forward to reunion when Monaco host Nice|
|Barcelona reject Neymar phone call reports|
|Wentz is the quarterback ´going forward´, says Eagles coach Pederson|
|Gattuso: Higuain has not asked to leave|
|Drew Brees by the Opta numbers: 10 facts for QB´s milestone birthday|
|Harry Kane injury: England captain´s history of ankle woe|
|Harry Kane injury: Opta numbers suggest Spurs struggles|
|Harry Kane injury: Tottenham´s options in striker´s absence|
|Allegri: Supercoppa clash practice for Champions League knockouts|
|First in clean sheets, second to Schmeichel in titles – Cech´s Premier League career in Opta numbers|
|Warrington sign England star Widdop|
|Gatland confident Wales can win Six Nations|
|Fulham sign Netherlands international Babel|
|Harry Kane injury: Games the Tottenham striker will miss|
|Simeone focused on matches, not transfer dealings|
|Iran v Iraq: Pressure off for Queiroz & Katanec|
|Vietnam v Yemen: Kocian keeps the faith|
|Darren Bravo back in West Indies Test side for first time since 2016|
|Kane out until March with ankle injury|
|South Korea v China: Son arrives for Group C dead rubber|
|Kyrgyzstan v Philippines: Eriksson remains hopeful|
|McGrath to miss Six Nations, Sexton nearing fitness|
|Kohli savours Dhoni ´classic´|
|Ford: People obsess over Farrell fly-half battle|
|EFL asks Leeds to explain ´spygate´ scandal|
|No alarms for Djokovic and Zverev, Raonic masters Kyrgios|
|Australia 3 Syria 2: Rogic breaks hearts with stoppage-time winner|
|Palestine 0 Jordan 0: Socceroos winner keeps hopes alive for Lions of Canaan|
|Halep: The results don´t matter any more|
|Hard work for Halep as Serena and Osaka sail through|
|Napoli director to take legal action over ´false´ quotes about Rog move|
|Alexander-Arnold facing absence of up to four weeks|
|Solari: We only have one number nine at Real Madrid|
|Halfpenny & Young named in Wales´ Six Nations squad|
|Crawford v Khan confirmed for April 20|
|Centurion Kohli inspires India to level ODI series|
|Wagner hails Huddersfield togetherness after exit|
|Hughes to join Bristol, Le Roux also leaving Wasps|
|ICC appoints Sawhney as new CEO|
|Forest appoint club legend O´Neill as new manager|
|Halep digs deep to gain revenge over Kanepi|
|Cech to retire at the end of the season|
|Brisbane Roar 0 Melbourne Victory 5: Barbarouses treble sinks Roar|
|´Struggling´ Azarenka breaks down in tears following Australian Open exit|
|Dominant Djokovic coasts through in Melbourne|
|Allardyce admits Huddersfield appointment is ´highly unlikley´|
|Choupo-Mouting: Manchester United have changed|
|Faletau set to miss Six Nations with another broken arm|