Carter Gordon is again under an injury cloud after the Wallabies were left lamenting a frustrating 28-28 draw in Mendoza that still secured a historic series win against Argentina.
Chasing a fifth-straight win and fourth in a row under new coach Les Kiss, the visitors benefited from back-to-back Argentina yellow cards for deliberate knock-ons that left the hosts two short for most of the final 10 minutes.
But with playmaker Gordon (leg) off injured - halfbacks Kalani Thomas and Ryan Lonergan acted as playmakers - the hosts coughed up possession and then knocked on as Los Pumas wound down the clock and even searched for their own match-winner well after the final hooter.