Australia captain Mile Jedinak acknowledged fatigue – both physically and mentally – cost his side against Spain on Monday.
Ange Postecoglou's side ended their 2014 FIFA World Cup campaign without a point after the world champions eased to a 3-0 triumph in Curitiba.
It was a disappointing way for Australia to bow out of the tournament, given their impressive performances against Chile and the Netherlands, despite both games ending in defeat.
Australia's bold and daring approach won many admirers in Brazil, but Jedinak felt the intense nature of their first two matches cost them against Spain.
"They (physical and mental exhaustion) definitely both come into play with the way the games have gone. They've been such high intensity all the way through," Jedinak is quoted as saying in The Age.
"But at this level, it (is) something you have to deal with if you want to play against this sort of opposition. That's the level we've got to try and get to.
"It was tough (against Spain). We started really well but we let them back in and obviously we know the quality they've got.
"It's been a disappointing tournament by their standards but we knew that wouldn't mean anything and they'd want to make it right.
"We were a little bit unfortunate…we conceded three goals and that's what you get against quality opposition."
Jedinak still looked back on the campaign fondly, though, as the midfielder – appointed skipper earlier this year – relished the responsibility on the big stage.
And he has now targeted success in the Asian Cup, which Australia will host in January, as his side's next goal.
"I've been honoured to lead this bunch of boys in the heat of battle at the World Cup on the biggest stage," he added.
"Obviously I've had some great support from my team-mates and the senior players in the group.
"Not only that but we just bonded together and you can see out there we don't want to let each other down.
"We were working doubly hard for each other. That showed, and I can't fault anybody.
"The team has grown, we know that, and we know some of the stuff we play (is competitive).
"It's about now taking the next step and turning those positives into results and points. We've been challenged to get better, not only individually but collectively and that starts now."
|Malaga presidents wants Isco return|
|Griezmann must think before he speaks - Saul|
|Rooney: I decided to take corners instead of Kane at Euros|
|Benteke: My time at Liverpool was not a failure|
|Asensio: I had the chance to join Barca|
|Morata: I had five or six phone calls every day|
|Costa: I wanted to return to Atletico|
|Mascherano: It would have been ´a sin´ for Messi to stay in international retirement|
|Guardiola: No one plays better than Barcelona|
|Sigthorsson seals Galatasaray loan move|
|Griezmann urges France to forget Euro 2016|
|Konoplyanka joins Schalke on loan|
|Mustafi finalises Arsenal move|
|Chambers loaned to Middlesbrough by Arsenal|
|Ajax snap up Ziyech from Twente|
|Kenedy joins Watford on loan from Chelsea|
|Cuca backs ´golden boy´ Gabriel Jesus to take off at Man City|
|Aguero´s brother joins Cadiz on loan|
|Leicester made €30m bid for Adrien Silva, father reveals|
|Schweinsteiger feels ´deep gratitude´ for Germany career|
|Swansea complete deal for Barnsley defender Mawson|
|Perez delight at Arsenal signing|
|Inter complete Gabriel capture|
|Mariappa returns to Watford|
|Aguero charged over Reid elbow|
|Hart pictured with Torino shirt ahead of loan switch|
|Albrighton pens fresh Leicester deal|
|Hull seal club-record Mason swoop|
|Pjanic confident Juve debut is on the horizon|
|Lucescu confirms Juventus interest in Witsel after Everton snub|
|Messi trains ahead of Argentina return|
|Villa sign Kodjia in a deal worth up to £15m|
|Marshall leaves Cardiff and heads to Hull|
|Rosicky returns to Sparta Prague|
|Gnabry close to Werder Bremen switch|
|Arsenal complete Perez deal|
|Celtic sign Gamboa from West Brom|
|Remy joins Palace on season-long loan|
|Kante like a rat - Hazard|
|Rooney proud to break England outfield caps record|
|Rooney to quit international football after World Cup|
|Barcelona sign €30m Valencia striker Alcacer|
|Koke and Vazquez welcome Laporte to Spain fold|
|Schweinsteiger has no ´personal problems´ with Mourinho|
|Alcacer, Hart, Wilshere and the deadline-beating deals still to come|
|Antonio thought first England call-up was banter|
|Premier League a completely different market - Heidel|
|Lens completes Fenerbahce loan move|
|Pescara awarded points after Sassuolo field ineligible player|
|Lyon calm Lacazette injury fears|
|Bamford joins Burnley on loan|
|Van Basten to leave Netherlands´ backroom staff for FIFA role|
|Ventura perfect for Italy - Verratti|
|Martial needs to be more consistent - Deschamps|
|Verratti not happy at PSG - Ventura|
|Ventura: I´ll probably manage Chelsea when Conte leaves|
|Bartomeu: Barca discussing new contract with Messi|
|Bauza: No doubts over Messi motivation|
|Schmeichel targets quick return after surgery|
|Giovinco to help aid earthquake victims in Italy|
|Ancelotti backs Madrid for LaLiga and Ronaldo to be top goalscorer|
|Gomes: Portugal can deal with Ronaldo absence|
|Sterling reveals Guardiola impact|
|Fiorentina deny approach for Chelsea target Alonso|
|Allardyce confirms Rooney retains England captaincy|
|Hart to join Torino – agent|
|Sanches withdrawn from Portugal squad|
|Sporting CP issue Adrien Silva clarification amid Leicester links|
|Watford confirm Okaka signing|
|Manchester City outcast Zuculini seals Rayo Vallecano loan switch|
|Dembele offers something different - Deschamps|
|Sunderland would just love to get rid of me - Lens|
|No Casillas in Spain squad represents a ´new era´, says Ramos|
|Zenit defender Criscito could return to Italy, claims agent|
|Barcelona reveal Messi hamstring injury|
|Modric named new Croatia captain|
|Napoli announce Rog signing|
|De Boer is building something at Inter - Morratti|
|Keane eyes coaching career after international retirement|
|Bravo left out of Chile squad for family reasons|
|West Brom announce Chadli signing|
|Former Dodgers owner set for Marseille purchase|
|Ferdinand: I reached out to Wenger|
|Holgate has big quality for a young player - Koeman|
|Manchester United want to keep Rojo, says agent|
|Low not concerned by captaincy as Germany bid farewell to greats|
|Aguero pulls out of Argentina squad|
|Howedes: Germany must prove themselves all over again|
|Ventura close to tears on first day of Italy training|
|Torino interested in City outcast Hart|
|Adrien Silva hoping to seal ´exceptional´ Leicester switch|
|Boufal joins Southampton from Lille for club-record fee|
|Villa outcast Lescott joins AEK Athens|
|Milner: I´m learning left-back role as fast as I can|
|Allardyce ready for Hart transfer disruption|
|´Door always open´ for Barkley - Allardyce|
|Xhaka like Petit, claims Wenger|
|Coric: I was a medical away from joining Liverpool|
|Pasalic keen to put injury troubles behind him at Milan|
|Guardiola delighted with Sterling form|
|Rooney should retire from England duty - Shearer|
|Hazard can ´decide´ the title - Ivanovic|
|Allardyce hails ´outstanding´ Antonio|
|Belgium can make history - Henry|
|Nice president: Call Balotelli and tell him we need a striker|
|Modric would like to see out career in Madrid|
|Geromel replaces Caio in Brazil squad|
|Mustafi: Ozil convinced me to join Arsenal|
|Pardew confirms ´one or two´ more signings|
|MLS Review: Kaka brace denies NYC top spot, Timbers beat Sounders|
|Mihajlovic: I won´t waste anymore breath on Maksimovic|
|Okon named Central Coast Mariners coach|
|´Special´ Rashford will get chance - Rooney|
|Injury forces Schurrle out of Germany squad|
|Burke snubs Premier League interest to join RB Leipzig|
|Guardiola: Nasri has a future at City, if he wants it|
|Klopp confident ´all will be good´ with Sturridge|
|Emery confident PSG will bounce back|
|Athletic may strengthen squad - Valverde|