Tries by Gonzalo Tiesi and Juan Manuel Leguizamon helped the Pumas build up a 13-12 half-time advantage, but Dan Parks three penalties and drop-goal kept the Scots in contention.
The second period and Parks potted his fourth penalty giving the tourists the lead for the first time. He then added two more penalties and a drop-goal near the end. To edge Scotland to a famous victory with the final score of:
Argentina 16-24 Scotland
Tries: Tiesi, Leguizamon Pens: Contepomi 2
Pens: Parks Drop-goals: Parks 2
Argentina: Rodriguez, Borges, Tiesi, Fernandez, Agulla, Contepomi, Lalanne, Roncero, Ledesma, Scelzo, Carizza, Albacete, Fessia, Leguizamon, Fernandez Lobbe.
Replacements: Amorosino for Borges (47), Figuerola for Lalanne (78), Creevy for Ledesma (68), Ayerza for Scelzo (44).
Not Used: Galarza, Campos, Mieres.
Sin Bin: Leguizamon (40).
Scotland: Southwell, Evans, De Luca, Morrison, Lamont, Parks, R. Lawson, Jacobsen, Ford, Low, Hamilton, Kellock, Brown, Barclay, Beattie.
Replacements: Blair for R. Lawson (60), S. Lawson for Ford (76), Strokosch for Beattie (60).
Not Used: Cross, MacLeod, Godman, Thompson.
Referee: Dave Pearson (RFU)
The second and final Test takes place at the Estadio Jose Maria Minella in Mar del Plata next Saturday