The Reds grounded out an 18-7 win against the Jaguares in an error-strewn game in Buenos Aires on Saturday.
The Jaguares were dominant throughout the game in terms of possession and territory but they were blunted by a Reds defence. The resolute defending earned the Australians a third win in a row.
The Reds opened their account with a pair of penalties from scrumhalf James Tuttle, before the Jaguares responded with Bautista Delguy going over off the back of a powerful scrum.
The visitors then went ahead when hooker Brandon Paenga-Amosa went over off the back of a rolling maul, giving them an 11-7 half-time lead.
After a sloppy third quarter, the Reds managed to extend their lead as wing Filipo Daugunu scored after an initial break from No 8 Caleb Timu.
From then on the Jaguares dominated the match, putting the Reds defence through an acid test only to be repelled by a side that simply refused to fold.
Jaguares – Try: Bautista Delguy. Conversion: Nicolás Sánchez.
Reds – Tries: Brandon Paenga-Amosa, Filipo Daugunu. Conversion: James Tuttle. Penalties: Tuttle (2)
Jaguares – 15 Joaquin Tuculet, 14 Bautista Delguy, 13 Matias Orlando, 12 Santiago Iglesias, 11 Emiliano Boffelli, 10 Nicolas Sanchez, 9 Gonzalo Bertranou, 8 Javier Ortega Desio, 7 Marcos Kremer, 6 Pablo Matera (c), 5 Tomas Lavanini, 4 Matias Alemanno, 3 Nahuel Tetaz Chaparro, 2 Agustin Creevy, 1 Felipe Arregui.
Subs: 16 Julian Montoya, 17 Santiago Botta, 18 Juan Pablo Zeiss, 19 Guido Petti, 20 Juan Manuel Leguizamon, 21 Martin Landajo, 22 Juan Martin Hernandez, 23 Sebastian Cancelliere.
Reds – 15 Aidan Toua, 14 Filipo Daugunu, 13 Chris Feauai-Sautia, 12 Samu Kerevi, 11 Eto Nabuli, 10 Jono Lance, 9 James Tuttle, 8 Caleb Timu, 7 Adam Korczyk, 6 Angus Scott-Young, 5 Kane Douglas, 4 Izack Rodda, 3 Taniela Tupou, 2 Brandon Paenga-Amosa, 1 James Slipper (c).
Subs: 16 Andrew Ready, 17 JP Smith, 18 Ruan Smith, 19 Harry Hockings, 20 Liam Wright, 21 Ben Lucas, 22 Hamish Stewart, 23 Duncan Paia’aua.
Photo: David Fernandez/EPA