England capitulated to 110 all out as a Jasprit Bumrah-inspired India thumped the shell-shocked hosts by 10 wickets in the first one-day international at The Kia Oval.
Jos Buttler's team were rolled in just 25.2 overs with Bumrah (6-19) bagging the best ODI figures for an India bowler against England, before Rohit Sharma (76no off 58) and Shikhar Dhawan (31no off 54) propelled the tourists to victory in just 18.4 overs by sharing their 18th hundred partnership in one-day international cricket.
England looked in danger of recording their lowest-ever ODI total - which remains the 86 they made against Australia at Emirates Old Trafford in 2001 - as they plummeted to 26-5 and then 68-8, only for David Willey (21) and Brydon Carse (15) to put on 35 for the ninth wicket, the highest stand of the innings, to take the hosts into three figures.
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Jason Roy, Joe Root, Ben Stokes and Liam Livingstone departed for ducks - Moeen Ali (14) would have joined them if not for a drop from Rishabh Pant - with England were shredded by Bumrah's swing and the seaming deliveries of Mohammed Shami (3-31) in a humid and overcast south London.
India skipper Rohit - whose side won the preceding T20 international series 2-1 - elected to bowl after winning the toss and his quicks torpedoed England, who initially slumped to 7-3 inside three overs as Bumrah and Shami found extravagant movement and bounce on a green pitch.
The tourists did not suffer similar top-order woes, albeit that Dhawan would have been run out from the first ball of the chase had Jonny Bairstow's shy from midwicket been on target.
India coasted to their target with 188 balls to spare - Rohit clinching a 45th ODI half-century from 49 balls and Dhawan drumming the winning boundary - to take a 1-0 lead in the three-match series, which continues at Lord's on Thursday and then concludes at Emirates Old Trafford on Sunday.
Brilliant Bumrah stars as England bag four ducks
Player of the Match Bumrah struck twice in the second over - Roy dragging onto his stumps and Root snicking a rising ball behind - before he nicked off Bairstow (7) in the fourth as Pant claimed a superb one-handed grab and then bowled an advancing Livingstone round his legs in the eighth.
According to CricViz, Bumrah's delivery that castled Livingstone swung 3.2 degrees, more than any other wicket-taking ball he has bowled in ODIs.
Shami was devastating with his seam movement, inflicting a golden duck on Stokes as the England Test captain inside-edged behind to Pant and also accounting for white-ball captain Buttler, who top-scored with 30 from 32 deliveries - 24 of Buttler's runs came in boundaries.
Buttler holed out to Suryakumar Yadav on the deep square leg fence as he and Moeen - the only members of the top seven to make double figures - departed in the space of five balls after putting on 27 for the sixth wicket.
Moeen chipped back to Prasidh Krishna (1-26) to fall caught and bowled in the 14th over having been shelled down the leg-side by Pant off Bumrah in the 10th - England would have been 29-6 had the ball stuck in Pant's glove.
Craig Overton was then bowled for eight when Shami seamed a delivery through the gate before Willey and Carse performed a repair job of sorts, ensuring England did not sink to their worst-ever score in the format.
But both were then bowled by Bumrah - Carse yorked and Willey removed looking to ramp leg-side - as the paceman bettered compatriot Ashish Nehra's 6-23 against England in Durban during the 2003 World Cup.
That left Reece Topley stranded on six not out from seven deliveries - Topley having smashed his first international six, over long-off off leg-spinner Yuzvendra Chahal, in the over before Willey was dismissed.
Topley and Willey then opened the bowling for England but could not locate the lavish movement found by Bumrah and Shami as India, without the injured Virat Kohli (mild groin problem), started steadily before cantering to victory - Topley, Overton and Carse struck for a combined 15 boundaries.
What's next?
England will aim to bounce back across London at Lord's on Thursday in the second one-day international (1pm start) before the final game of the series takes place at Emirates Old Trafford in Manchester on Sunday (11am start). Catch both games live on Sky Sports Cricket (Sky channel 404).
'Bumrah best all-format bowler in the world'
Sky Sports Cricket's Nasser Hussain: "Bumrah would have to be the best all-format bowler in world cricket. Who would be the challengers? Maybe Trent Boult, Shaheen Shah Afridi, Jofra Archer when fit. But right now, he is the best. That was spectacular. I don't think you can be overly critical of England's batters. Sometimes you just have to say it's wonderful bowling."
Former India coach Ravi Shastri: "It was unbelievable from India. The ball did quite a bit, there was something on offer there for the faster bowlers, but the way Bumrah and Shami bowled as a pair to put pressure on England early on was something fabulous. Once they rolled over the first four or five, there was no looking back."
Buttler: England won't panic; batting is our super strength
England captain Jos Buttler: "You certainly don't want days like this to come. It's tough to take but it's certainly key not to panic, not to look too much into it and find too many faults. India bowled fantastically well and we didn't manage to deal with it as well as we'd have liked.
"But, if I look back over the past five or six years, batting has been our super strength in this form of the game. You look at the names of the guys in there, they are some of the best players we've had.
"We'll try and learn from it as much as we can but we'll stick to what we know. There's huge trust in that dressing room that there are brilliant players in there. We need to be positive and put things right."
Watch the second ODI between England and India on Sky Sports Cricket on Thursday. Coverage starts at 12.30pm with the first ball at 1pm.