Harry Wilson is set to be announced as the Wallabies' captain for their Rugby Championship match against Argentina, marking a surprising rise for the 24-year-old who has had a tumultuous time under previous coaches. Wilson becomes the eighth captain in 15 Tests, reflecting ongoing instability in Australian rugby. Meanwhile, Hamish Stewart will make his Test debut, becoming the 15th debutant this year, a record not seen since 1962. Stewart steps in for the injured Hunter Paisami, following a long journey through Super Rugby to finally earn his spot. Coaches praise Stewart's potential to bring a fresh dynamic to the team, as they aim to halt an eight-match losing streak. The changes highlight Joe Schmidt's extensive rebuilding efforts with the Wallabies as they prepare for the clash in Buenos Aires.