Massimo Carrera admitted he substituted Spartak Moscow's top goalscorer Quincy Promes by mistake as they were held to a 1-1 draw by Maribor in the Champions League.
Promes was hauled off with a suspected toe injury seconds after Damjan Bohar scored in the 85th minute to cancel out Aleksandr Samedov's opener for the visitors.
After his side played the final minutes of the game without their in-form frontman, Carrera revealed that the decision to substitute him was made in error.
"Promes' substitution was a mistake," Carrera told reporters.
"I wanted to replace another player, but he [Promes] pointed to his foot and I thought he had a problem. But it wasn't so."
Promes was one of a number of players to go close to scoring for Spartak on the night as they sought to make a winning return to the Champions League group stage following a five-year absence.
But Carrera paid tribute to the perseverance of the Slovenian champions, who fought to the end for a famous result.
"We didn't respond well after we scored and that led to the equaliser," said Carrera.
"We always play to the best of our abilities. We want to win at all our matches. There are five matches left and everything is still possible.
"We played our game, we had enough chances to score, but the result is fair. Both teams deserve a point."
After seeing his side snatch a point in the dying minutes, Maribor coach Darko Milanic said he did not want the final whistle to blow and he singled 25-year-old midfielder Bohar out for praise.
"We saw a great match, excellent, even. I am very satisfied," said Milanic. "We had lots of chances. We managed to equalise, we showed great character.
"I thought we could crush them. I wanted to up the pressure and I wanted to keep on playing. We were tactically very good when they [Spartak] had the upper hand.
"Bohar is a specialist for these European matches. He is very good at finding spaces. He was very solid.
"Of course one wants always to achieve even more, but we are really satisfied with this result."
|Uruguay v Russia: Selection posers for already-qualified pair|
|Federer scraps his way to yet another Halle final|
|Lunin rejected ´3,000 offers´ to join Real Madrid|
|On your bike! Iceland physio sent home after cycling accident|
|Not just Real Madrid interested in Fekir, says Aulas|
|France frustrated by officials again as All Blacks complete sweep in style|
|Jose Enrique reveals brain tumour surgery|
|The referee was a disaster, fumes Matic|
|Lakmal to captain Sri Lanka in Chandimal´s absence|
|Alli back in England training|
|McIlroy, Watson plotting moves as Harman leads Travelers Championship|
|Tearful Neymar is a joyful boy, says Jesus|
|Ruiz: Coutinho has the same quality as Neymar|
|Kovacic announces intention to leave Real Madrid|
|Red Sox edge Mariners in 34-hit extravaganza|
|Marquez asks Mexico fans to ´let them rest´|
|Fabregas hopeful of Spain recall|
|Milinkovic-Savic plays down Juventus speculation|
|Rashford inspired by Ronaldo|
|Messi is not a leader, he is no Ronaldo, claims Petit|
|Better than Ballack? Hodgson backs Loftus-Cheek to shine against Panama|
|Svitolina and Garcia suffer upsets|
|Walker responds to Ferdinand criticism|
|Djokovic still hungry for more after reaching major milestone|
|Ellis drop goal earns Castleford dramatic win|
|Nigeria hero Musa unsure on Leicester City future|
|X marks the spot - Granit´s rocket sets World Cup first|
|Xhaka and Shaqiri follow the script as Serbia are derailed|
|Chandimal appeal against ban rejected|
|Real Madrid sign teenage goalkeeper Lunin|
|Serbia 1 Switzerland 2: Shaqiri strikes late to clinch crucial comeback victory|
|Suspended Srna joins Serie A side Cagliari|
|Cilic sets up Kyrgios showdown as Djokovic reaches milestone|
|Kudla up next in Federer´s Halle ´fight´|
|Assistant Farbrace to take charge of England for T20 games|
|Hummels hoping to be fit for Sweden clash|
|Hend surges clear as Fleetwood struggles again in Pulheim|
|Giant-killers Mexico embrace sudden weight of expectation|
|Roma complete €17.25m Kluivert deal|
|Pakistan name strong group for Zimbabwe tour|
|Choc Horror: Boullier insists McLaren do not hand out Freddos as bonuses|
|Neymar: Not everyone knows what I went through|
|Poland v Colombia: No time to dwell on regrets, warns Aguilar|
|Musa shows Messi how it´s done to set up critical Argentina showdown|
|Nigeria 2 Iceland 0: Musa brace boosts Super Eagles & Argentina|
|McLaren and Renault open to Ricciardo talks|
|We must win, we have no other choice - Maaloul|
|Germany will respond against Sweden, insists Low|
|´The best among all Asians´, South Korea trust in Son against Mexico|
|Stalin´s bunker an unlikely site for Russia´s World Cup charm offensive|
|England v Panama: Rashford tipped to start as Southgate´s side aim for last 16|
|Erasmus wary of ´wonderful´ Cipriani|
|Hummels to miss Germany-Sweden, confirms Low|
|Murray accepts Eastbourne wildcard|
|St Petersburg madness lines up Neymar and Brazil with heroes of the past|
|Martinez happy to be ´boring Belgium´|
|Japan v Senegal: Squeaky clean Group H rivals eyeing huge step towards last 16|
|Argentina team the worst in history - Ardiles|
|Ravanelli upsets wife by taking Arsenal job...in Kiev|
|Federer moves a step closer to 10th title in Halle|
|Brazil 2 Costa Rica 0: Coutinho and Neymar score in stoppage time to snatch win|
|Andersson: Sweden embracing big occasion as bug sweeps through team|
|LeBron in ´good dialogue´ with Cavaliers|
|Ronaldo will always be the best, Fonte claims|
|Southgate criticises press for England team leak|
|O´Mahony: Series win in Australia would be up there with Grand Slam|
|Khedira thrilled with Can capture, staying with Juventus|
|Samuel open to Higuain-Icardi swap deal|
|It´s just a game - Milligan disappointed by Kruse criticism|
|From drug-testing lab to gastro pub: Sochi happy not to forget dark past|