A dramatic last-minute score from debutant Denny Solomona secured England a 38-34 first Test win over Argentina in San Juan.
George Ford contributed 24 points -- including a superb try of his own -- as Eddie Jones' youthful side showed impressive resilience to snatch victory from a game in which the lead changed hands relentlessly.
England were on the back foot early on and the brilliance of Nicolas Sanchez was quickly to the fore -- his neat grubber-kick touched down by another debutant, Emiliano Boffelli.
The visitors responded manfully and any fears they would be annihilated by the famous Argentina scrum were quickly put to rest as the whistle of referee Nigel Owens allowed Ford to open his account from the tee.
The opposing fly-halves traded further penalties before England edged ahead when Marland Yarde sped over in the corner; only for Argentina to snatch a 17-13 half-time lead thanks to Tomas Lavinini's burrowing score.
The second half proved even more entertaining after Ford and Sanchez added to their penalty tallies and it was Henry Slade who wowed the crowd first -- his exquisite dummy and grubber assisting wing May in touching down unopposed.
England's joy was short-lived, though, as Solomona's England career began with an untimely slip that saw Jeronimo de la Fuente jog in under the posts and ignite the crowd once again.
Argentina cemented their lead with one of the tries of the season in the 53rd minute. Showing great ambition from their own five-metre line, the move culminated in Boffelli offloading for Joaquin Tuculet to cruise home.
To their credit, Jones' side refused to yield to the tide and a magical basketball-style pass from replacement Piers Francis saw Ford round off a blistering counter-attack that drew the two sides level with a quarter-of-an-hour remaining.
Juan Martin Hernandez looked to have secured victory for Argentina with a drop-goal two minutes from time but that only set the stage for Solomona, who bounced off one tackler down the line before stepping inside the next and racing to glory.