Australia qualify in second spot, behind Group D winners France, after a gritty 1-0 win over the Danes, with Les Bleus making nine changes and losing to Tunisia by the same scoreline, as substitute Antoine Griezmann had an injury-time equaliser ruled out for offside after a lengthy delay.
By then, the north Africans were going home in any case, as the Socceroos had completed their victory to reach the knockout stages for only the second time.
Eriksen proudly wore the armband and probed throughout for Denmark but the highly fancied Scandinavians could find no way through the resolute Australia rearguard.