Solomona may have taken the limelight at the end, but it was the experienced George Ford and his best performance in an England shirt that proved decisive.
England triumphed with a last gasp Denny Solomona try to beat the Pumas 38-34 in what was an incredible game of running rugby.
"I thought for our guys to win that was a tremendous effort".
"In the end I think we had 10 new caps on there and to show poise and stick to what we needed to do in the circumstances was an unbelievable effort from the young guys".
But Argentina remained a constant threat in attack themselves and scored two tries in two minutes through De la Fuente and Joaquin Tuculet, before Ford level things up. The rugby league convert was forgiven for missing three early tackles as he raced away to touch down after coming on from the bench to announce his arrival in the Test arena. Sanchez hooked his effort wide, but the hosts kept up the pressure, and Sanchez more than made up for his miss with a great kick through the English line for Boffelli, who scored the first try.
Chiseldon's May touched down early in the second half to put a youthful England team back in front following a narrow half-time deficit.
In a game where the momentum continually shifted, England's young guns went toe-to-toe with Argentina, with victory sealed in dramatic fashion through 23-year-old Solomona's first England try.
"Tom Curry made some errors but got on with it".
Ford maintained his expert marksmanship with his fifth goal from as many attempts to make it 23-7 and that was the signal for Jones to send on cross-code winger Denny Solomona for his debut.
"He is going to be doing some defensive work next week", said Jones. That was the good thing: they just got on with the next thing. Sanchez converted both to give Los Pumas an eight-point lead.
Sanchez's conversion gave Argentina a two-point lead in what had been an intense opening half which saw England make almost twice as many tackles as their opponents: 70-37.
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.
Per BBC Sport's live blog of the match, former England coach Andy Robinson was impressed: "That's a really smart bit of play from Argentina".