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'
|Sunderland v Manchester United: Carrick lauds Martial form ahead of key clash|
|Bundesliga record-breaker Nagelsmann replaces Stevens at Hoffenheim|
|Robben: No Manchester City move discussions with Guardiola|
|Borussia Dortmund v Hannover: Milosevic staying positive amid relegation fight|
|Norwich City v West Ham: Bilic eyes chance to build momentum|
|United poised for more heavy spending after record revenue|
|Pardew, Palace ´jealous´ of Leicester´s romantic title bid|
|Everton v West Brom: Martinez wants Goodison fortress|
|Allardyce confirms Johnson omission|
|Real Madrid not on Spalletti´s mind|
|Real Madrid v Athletic Bilbao: Valverde´s men out to improve shocking Bernabeu record|
|Angry Afobe hits back at Wolves after ´not trying´ accusations|
|Bojan agrees Stoke extension|
|Celina demanded international game-time - Norwegian FA|
|Manchester United profits surge after Champions League return|
|Prince Ali: FIFA is in crisis and needs to change|
|Aguero eyes further goal joy against Spurs|
|Deeney the perfect partner for Vardy and Kane with England, says Flores|
|Sirigu wanted PSG exit|
|Bordeaux suspend Prior and Sane|
|Saul in no rush to leave Atletico|
|Bilic: West Ham close to Payet deal|
|Martinez rubbishes Jagielka exit talk|
|Tomkins to miss five weeks with calf injury|
|Sunderland to drop Johnson for United match|
|Martinez: Title Leicester´s to lose|
|Xhaka tempted by Premier League switch|
|Carragher proud of Liverpool ticket-price U-turn|
|Mourinho and United a perfect match - McCarthy|
|Blanc extends PSG contract|
|Pulis heaps praise on Peterborough|
|Toranzo did not lose toes - Huracan president|
|Willian expects Terry to depart Chelsea|
|Mexico 2 Senegal 0: Duenas, Pizarro inspire win|
|Copa Libertadores Review: Sao Paulo, Racing qualify for group stages|
|Liverpool should be transparent with Sturridge injuries - Owen|
|FFA hands Wanderers fine and suspended points deduction|
|Luis Enrique: I had to give my voice a rest|
|Silva: I was not kicked off Marseille team bus|
|Blanc could sign PSG renewal by end of week|
|PSG drawn against familiar foes Saint-Etienne in Coupe de France|
|Neville confident Valencia fans will be back|
|Guardiola praises beaten Bochum|
|Coupe de France Review: Ibrahimovic sends PSG through, Nantes win thriller|
|I love penalties - West Brom´s shootout hero Foster|
|Ross County 0 Hearts 3: Dauda dazzles in valuable victory|
|Bayern Munich avoid Borussia Dortmund in DFB-Pokal semi-finals|
|FC Heidenheim 2 Hertha Berlin 3: Ibisevic at the double in DFB-Pokal|
|Hart: We will fight for Pellegrini all the way|
|Peterborough United 1 West Brom 1 (aet, 3-4 on pens): Foster spares Premier League team´s blushes|
|Paris Saint-Germain 3 Lyon 0: Ibrahimovic fires holders into last eight|
|Valencia 1 Barcelona 1 (1-8 agg): Kaptoum breaks record with late leveller|
|Bochum 0 Bayern Munich 3: Lewandowski double helps book semi-final spot|
|Colour clash forces Stoke to produce new kit|
|Hernandez to miss Darmstadt match with muscle injury|
|Stoichkov backs ´smart guy´ Neymar to stay at Barcelona|
|FSG´s letter of apology to Liverpool fans in full|
|Huracan bus overturns following Copa Libertadores clash|
|Liverpool scrap ticket price increases following fan backlash|
|Oviedo hopeful of new Everton contract|
|Zoff: Juventus-Napoli a Scudetto match|
|Bolton chairman Phil Gartside dies aged 63|
|Palermo turn to Bosi after Barros Schelotto exit|
|Ben Arfa considered retirement from football during exile|
|Bilic: We paid the price for cup progress|
|Griezmann happy to stay at Atletico|
|Wales to face Sweden in final Euro 2016 warm-up|
|Varela hopeful of long United career|
|Ki: I had ice on my face for two days|
|Niasse settling in well, could face West Brom - Martinez|
|Stevens leaves Hoffenheim on health grounds and retires|
|Diaby nearing return after near 18-month lay-off|
|Nasri would love to finish career at Manchester City|
|Captain Howedes extends Schalke stay|
|M´Vila keen to stay if Sunderland survive|
|Johnson admits child sex and grooming charges|
|Amazing Mahrez is one of Premier League´s best - Ulloa|
|Ronaldo, Messi rivalry good for football - Zidane|
|Barros Schelotto leaves Palermo|
|Age is just a number - Ilori defends Klopp´s team selection|
|Messi, Suarez and Neymar rested for Copa second leg|
|Madrid can dream of trophies under Zidane - Raul|
|Ancelotti: Italy job is a decade away|
|Reus will become a monster, says Dortmund boss Tuchel|
|Young Tottenham stars don´t know their limits - Lloris|
|Niang happy at Milan despite Leicester interest|
|Ticket price rise means more tourist fans, warns football supporters chairman|
|Ogbonna revels in first West Ham goal|
|Copa Libertadores Review: Huracan, River Plate advance to group stages|
|Klopp backs Benteke to rediscover goalscoring form|
|Turan will not leave Barca for China - agent|
|Beating Chelsea more difficult without Mourinho - Motta|
|Tuchel praises Dortmund for ´perfect game´|
|Klopp rues Liverpool wastefulness in FA Cup loss|
|Allegri: Chelsea rumours unfounded|
|Bilic feels weight of history after Liverpool win|
|Coupe de France Review: Second tier Sochaux stun Ligue 1 Monaco|
|West Ham 2 Liverpool 1 (aet): Ogbonna sinks Klopp´s men in cup thriller|
|Football League Review: Rhodes rescues a point to send Boro top|
|Stuttgart 1 Borussia Dortmund 3: Aubameyang helps Tuchel´s men into last four|
|Kyle Allen blames chaotic Texas A&M culture on Johnny Manziel era|
|Dortmund fans stage protest against ticket prices for Stuttgart game|
|Bayer Leverkusen 1 Werder Bremen 3: 10-man hosts dumped out|
|Ferdinand fears title wilderness for United|
|Carvalho lands new Sporting deal with €45m buy-out clause|
|Ben Arfa out for at least four weeks with hamstring injury|
|Neville´s Valencia woes welcomed by Crespo|
|Ozil key to Arsenal´s title hopes - Rosicky|
|Zika threat could keep Solo from Rio Olympics|
|Blanc pleased to have solved David Luiz matter|
|Atletico midfielder Partey suffers thigh strain|
|Dickov: Leicester title run built to last|
|Guardiola not a menace for our players, says Luis Enrique|
|Mexico v Senegal: Osorio believes in youngsters|
|Celta Vigo v Sevilla: Krohn-Dehli not taking Copa del Rey final for granted|
|Madrid confirm Marcelo shoulder dislocation|
|Injury rules Chiellini out of crucial Juve games|
|Oblak extends Atletico deal|
|Blanc hints PSG could move for Ben Arfa|
|Luis Enrique urges Neymar to cope with off-field distractions|
|Carrick: Manchester United not throwing in towel|
|Neville determined to turn things around at Valencia|
|Guardiola hails Lewandowski professionalism amid Real Madrid and PSG rumours|
|Guardiola wary of ´aggressive´ Bochum|
|Premier League reveals new logo|
|West Ham open Payet contract talks|
|I could leave Barcelona for Guardiola, says Busquets|
|Giggs can be Manchester United´s Guardiola - Robson|
|Zidane has everything to become a great coach - Ancelotti|
|Carragher: Liverpool got it wrong on ticket prices|
|Neymar will be at Barcelona for years, claims director|
|Eder talks up Inter´s Scudetto chances|
|Larsson: Watching Barca is like playing FIFA|
|City recruit Wilkinson hoping to debut in Melbourne derby|
|Allegri will join Chelsea, says former coach|
|Zanetti: No need to compare Maradona and Messi|
|Vardy: I never expected Leicester to top Premier League|
|Capello: Ronaldo has at least three years at the top|
|Klopp hoping for Sturridge revival|
|Bilic wants new contract to keep Payet at West Ham|
|Shelvey can be as good as Cabaye - Sissoko|