Argentina coach Mario Ledesma has hit back at Phil Kearns after the former Wallaby said the Jaguares should be turfed from Super Rugby.
The Crusaders'victory matched their achievement of 1998-2000 and cemented their undisputed status as Super Rugby's pre-eminent team.
Defensive resolve has carried the Jaguares to a 21-16 win over the Chiefs in Buenos Aires and booked them a historic berth in the Super Rugby semi-finals.
The Argentine franchise made it three wins from three against Australian opposition in 2019 with the five-tries-to-two victory on Saturday night.
Phil Kearns'view that the Jaguares have no place in Super Rugby did not go down too well with the Argentinians.
Only three Jaguares players picked to face the Waratahs on Saturday have not represented Argentina at Test level.
Matt Faddes,Sio Tompkinson and Liam Coltman touched down in the final 10 minutes of a frenetic first half,before the visitors rallied in the second.
The month-long international break did nothing to halt the Argentina-based side's momentum as they improved their win-loss record to 9-5.
Jaguares winger Ramiro Moyano scored a hat-trick in his side's 29-13 Super Rugby win over the Sharks
Five-eighth Nicolas Sanchez steered the Jaguares to a fifth consecutive victory as the Argentine team matched their record for wins in a Super Rugby season.
And things won't get any easier for the Brumbies when they face the most successful team in Super Rugby history on Saturday.