Iran face Bosnia-Herzegovina on Wednesday knowing they must win to have any chance of making the knockout stages of the FIFA World Cup.
Carlos Queiroz's side will need to put the disappointment of their late defeat to Argentina behind them and break from their shackles if they are to finish second in Group F, while hoping rivals Nigeria lose.
But first the focus must fall on ending their goalscoring drought, with Iran one of only two sides at the World Cup - Greece being the other - who have yet to score.
The display against Argentina will have given them a huge confidence boost, though, as Iran came within a few minutes of producing one of the most surprising results in World Cup history, until Lionel Messi's moment of brilliance.
Iran created chances of their own but Reza Ghoochannejhad and Ashkan Dejagah spurned the best of them, leaving Queiroz's men to contemplate what might have been.
Bosnia's debut at the global showpiece has not gone according to plan as their impressive form in qualifying, where they scored 30 goals, has failed to materialise in Brazil.
Defeats to Argentina and Nigeria have ended their hopes of qualification for the second round but Wednesday's match offers an opportunity to restore some pride and record a first World Cup win.
Talismanic striker Edin Dzeko has endured a frustrating tournament, missing a host of chances and being denied by an erroneous offside flag against Nigeria.
The Manchester City forward is not expected to start the final match as coach Safet Susic looks to give others a chance.
That will be music to the ears of Queiroz, who has been preparing his players for a crucial day in their World Cup history in Salvador.
"My major concern is to keep players focused," he said. "And, they'll need to convert those chances."
If Iran can finally find the back of the net to win, and Nigeria lose, they would both finish with four points and there could be a lengthy process to sort out second place in the group.
Initially goal difference would decide it, but there is a small chance that a lottery would have to decide who finishes second.
If Iran win their match 1-0 and Nigeria lose to Argentina by the same score, they would end up level on points and with the same number of goals for and against.
Given the teams drew 0-0 in their game, the only way to decide who progresses would be to draw lots - something that has never been used at a World Cup.
Iran should not take it for granted that they will win their final game, though, as Susic is determined to end Bosnia's maiden appearance at a finals on a high.
"Our obligation is to go out with honour, to leave a good impression,'' the coach said. ''It is a pity for this generation that it exits the World Cup so soon.
"They ran, fought and created chances."
|Coach: S. Sušić|
for A. Hadžić 61'
for T. Sušić 79'
for E. Džeko 84'
|Mourinho has ´got to grips´ with United - Ferguson|
|Uganda v Mali: A lot at stake for Mali in shot-shy showdown|
|Napoli 1 Fiorentina 0: Callejon heads Partenopei into semi-finals|
|Bordeaux 1 Paris Saint-Germain 4: Cavani, Di Maria secure final berth|
|Watzke: Dortmund would consider €80m for Aubameyang|
|Togo 1 DR Congo 3: Kabananga´s goal streak continues as Ibenge´s men top group|
|Morocco 1 Ivory Coast 0: Alioui stunner sends holders crashing out|
|Romeu earns Southampton extension as Puel targets away goal|
|Sunderland striker Anichebe out for up to 10 weeks|
|Elneny wants to be an Arsenal legend ´like Thierry Henry´|
|Corini leaves Palermo as Ballardini is tipped for fourth return|
|Hernandez leaves Leicester for Malaga|
|Lukas PodGOALski...Gala forward nets five amid J-League links|
|CAS rejects Serbian appeal against Kosovo UEFA membership|
|Thiago back in Bayern training as Arsenal showdown looms|
|Thiago back in Bayern training as Arsenal showdown looms|
|Shearer´s Toon Army ´trump´ the POTUS|
|Rooney´s record may stand forever - Ferguson|
|Carrick expects full-strength United as Wembley return beckons|
|They insulted his mother and then there were monkey noises - Cyprien on Bastia Balotelli abuse|
|No Chelsea regrets for Sampaoli as Sevilla mount title challenge|
|Egypt v Ghana: Cuper backs Elneny to deliver in crucial Group D clash|
|James adds to Zidane´s injury woes at Madrid|
|Zidane wants fans behind Madrid after latest Ronaldo whistles|
|Mason ´continues to make excellent progress´|
|Allegri slams ´stupidity´ surrounding Buffon referee hug|
|Niang in talks over AC Milan exit, confirms Montella|
|Sunderland sign Lescott|
|China-bound Ramos completes loan switch to Granada|
|Rahman to miss ´several months´|
|Leekens quits after Algeria´s AFCON exit|
|Jese has firm Premier League offer, claims Las Palmas president|
|´I´m blessed with golden genes´ - Adebayor insists he is ready for new Premier League chance|
|Messi renewal progressing ´very, very well´ - Robert|
|Neuer expects Clement success at Swansea|
|Klopp calls for Liverpool enjoyment|
|Mustafi talks up Arsenal belief|
|Van Basten still against offside, slams ´nonsense in the media´|
|Rakitic dreaming of career-long Barcelona stay|
|Toure inspired by Ibrahimovic as he explains Chinese Super League snub|
|Kasperczak committed to attacking approach as Tunisia reach AFCON quarters|
|Slimani wants Algeria youngsters to learn from AFCON humiliation|
|Senegal 2 Algeria 2: Slimani at the double as Desert Warriors bow out|
|Zimbabwe 2 Tunisia 4: First-half glut seals progression|
|Adrian: I always wanted to return to Villarreal|
|Togo v DR Congo: Agassa could miss crucial game after vandals hit home|
|Extended Southampton stay on the cards for Sims|
|Bayern hoping for speedy Vidal return|
|Hull sign Markovic on loan from Liverpool|
|Wenger charged with misconduct by FA|
|Deulofeu joins AC Milan - and this time the deal is definitely done!|
|Henderson still playing through pain, reveals Klopp|
|Record-breaking Rooney reveals secret to longevity|
|No ulterior motive behind Van Dijk captaincy call - Puel|
|Carroll ignoring want-away Payet|
|Gerrard´s managerial ambitions ´wonderful news for Liverpool´ - Klopp|
|PSG interested in Guedes, confirms Emery|
|Barca lose Busquets to sprained ankle|
|Pulisic commits to Dortmund until 2020|
|Mason speaking after suffering fractured skull|
|Aubameyang blames poor preparation for Gabon AFCON exit|
|David Beckham returns to PSG|
|Morocco v Ivory Coast: Holders must beat old boss Renard as group reaches thrilling conclusion|
|Djilobodji charged over Fletcher incident|
|Cahill and Terry visit Mason in hospital|
|Allardyce onto second-choice transfer targets|
|Dortmund sign teenager Isak|
|Madrid confirm Modric and Marcelo injury blows|
|Vidal fears longer lay-off, targets return against Arsenal|
|Yaya Toure: Sterling should have dived!|
|Turan wants to see out Barcelona contract despite China talk|
|Impassioned Ibrahimovic attacks Rooney´s critics|
|´He has to lose weight´ – Mihajlovic angry after dropping Maxi Lopez|
|Lack of Liverpool signings frustrates Klopp|
|Suarez: Busquets difficult to replace for Barca|
|Depay impresses Lyon after debut|
|CSL? Rooney committed to United|
|Denis Suarez wants more goals after opening Barca account|
|Simeone bemoans inconsistency but says Atletico are improving|
|Mourinho won´t stand in the way of Rooney and CSL|
|Dzeko on target as Roma stay on Juve´s tail|
|Rakitic ready to cover for injured Busquets|
|Bale and Kane wish Mason well after serious injury|
|Busquets injury less severe than feared - Luis Enrique|