Nuri Sahin lamented Borussia Dortmund's wastefulness on the counter-attack against Real Madrid and feels the team needed to "play smarter".
Dortmund fell to a comprehensive 3-0 defeat to Real in Wednesday's UEFA Champions League quarter-final first leg at the Bernabeu, with Gareth Bale and Isco firing Real Madrid into a 2-0 half-time lead before Cristiano Ronaldo netted for Carlo Ancelotti's men after the break.
Jurgen Klopp's charges had chances of their own as the likes of Pierre-Emerick Aubameyang and Henrikh Mkhitaryan went close, yet Dortmund failed to find a crucial away goal.
The result means Dortmund - who knocked Real out of the Champions League at the semi-final stages last season - face an uphill task in the second leg at Signal Iduna Park on Tuesday.
Sahin is refusing to give up hope of an unlikely comeback, but conceded Dortmund's chances of progressing are slim.
"We were not without chances, but we need to play smarter," he told Dortmund's official website. "We created a lot of counter-attacks, and should have taken at least one of them.
"And so we ended up without a goal, which makes our task in second leg a very difficult one. Their goals, of course, were also a testament of Real Madrid's quality.
"In addition, things didn't go our way from the start when they scored that early goal. Everything is possible in the second leg, but of course we have to be realistic."
Forward Marco Reus believes Dortmund were made to pay for a poor first-half performance.
"If we had played the first half the way we did in parts of the second, we could have gotten a better result," he commented.
"Now we have to accept this result, which of course is not a good one for the second leg."
|Coach: C. Ancelotti|
for Isco 72'
for K. Benzema 75'
for Cristiano Ronaldo 80'
|Payet exit not inevitable - Bilic|
|Wenger: Arsenal don´t need Payet|
|Jesus wants Manchester City titles|
|Orsolini arrives for Juventus medical|
|Rivaldo backs Coutinho to join Neymar at Barcelona|
|No danger of Messi leaving Barcelona, says father|
|Augusto: I convinced Oscar to come to China|
|Madrid-bound Maradona visits Napoli training|
|Sevilla in no rush over Sampaoli talks despite Barcelona links|
|Cafu: Resurgent Brazil can challenge world´s best|
|Klopp thrilled with Coutinho|
|Manchester United replace Real Madrid as world´s richest club|
|Madrid squad annoyed by defeats - Zidane wants more energy after latest loss|
|Casemiro rues more misery for Madrid against Celta|
|´Job done, let´s go home´ - Klopp happy to avoid extra time with narrow Plymouth win|
|FA Cup Review: Southampton leave it late to beat Norwich|
|Real Madrid 1 Celta Vigo 2: Aspas and Jonny extend Madrid winless run|
|Plymouth Argyle 0 Liverpool 1: Rare Lucas goal sees Klopp´s men through|
|Manchester City in La La Land as Schalke toil underground|
|Cameroon 2 Guinea-Bissau 1: Ngadeu-Ngadjui completes comeback to send Broos´ men top|
|Monaco confirm signing of Ajax teenager Antonucci|
|Manchester United´s interest in Griezmann is unsurprising - Simeone|
|Bamford ends spell in Chelsea wilderness with Boro return|
|Louis the great - Luis Enrique explains his and Barca´s debt to Van Gaal|
|Gabon 1 Burkina Faso 1: Spot-on Aubameyang makes his point|
|PSG send Ikone on loan to Montpellier|
|Senegal v Zimbabwe: Cisse wants to live up to favourites tag|
|Ghana´s Rahman leaves AFCON with knee injury|
|Algeria v Tunisia: Mahrez demands improvement in crucial Group B clash|
|Dortmund forward Dembele hits out at Bundesliga refereeing|
|Robben hopes Alonso stays at Bayern amid retirement rumours|
|Asian champions Jeonbuk banned from 2017 Champions League|
|Rakitic still an important player for Barcelona - Luis Enrique|
|Jesus will develop quicker at City - Emerson|
|Always take the weather with you - Spanish snow blights CSKA´s training camp|
|Messi never gave Coach interview, claims father|
|Gotze questions critics but admits to falling short of expecations|
|´Conte can have our title´ - Ranieri wants Chelsea to win the Premier League|
|Tottenham reject Premier League, Bundesliga offers for Wimmer|
|Liverpool sell Ilori to Reading|
|Potential victims in football abuse probe surpasses 500|
|Bonaventura signs new AC Milan contract|
|Messi: Ronaldo has achieved great things|
|Koscielny: Wenger has built men at Arsenal|
|Messi vows to stay at Barcelona ´for as long as they want me´|
|Cafu adamant Neymar will become world´s best|
|I´m just taking a sabbatical - Van Gaal denies he´s retired|
|Not even Gerrard won Premier League - Buttner says he´s not a United flop|
|Samper ignored Wenger as Barca midfielder rejected Arsenal|
|Pleased Pioli wants more from Inter|
|Evergrande boss Scolari dismisses Turan links|
|Klopp seeks legal advice over Matip|
|Marseille complete Sanson move|
|Inter 3 Bologna 2: Candreva prevents remarkable turnaround in Coppa Italia thriller|
|FA Cup Review: Non-league Lincoln stun Ipswich, Burnley and Palace through|
|Gabon v Burkina Faso: Aubameyang says hosts have learned from Guinea-Bissau setback|
|Mali 0 Egypt 0: El-Hadary makes history in stalemate|
|El-Hadary oldest AFCON player ever - 44-year-old Egypt goalkeeper makes history|
|Reus and Gotze on target but Bender injured in Dortmund win|
|Toure shunning lavish China interest to stay at City, says Seluk|
|Rahman´s AFCON in the balance, says Ghana boss Grant|
|Just 14 goals conceded and nine clean sheets - How Vertonghen blow could impact Tottenham|
|Ghana 1 Uganda 0: Andre Ayew hands Black Stars nervy victory|
|Swansea snap up Carroll and Olsson in double swoop|
|All is forgiven? - Costa trains with full Chelsea squad after reported Conte bust-up|
|I would throw myself off a bridge for Luis Enrique - Rakitic dismisses Barca rift rumours|
|Was Juventus´ new logo inspired by tennis star?|
|Smooth sailing for Liverpool in Plymouth? Klopp expects tough test|
|Demichelis re-joins Malaga until end of season|
|Cameroon v Guinea-Bissau: Broos urges new heroes to emerge|
|Boxing champ hits Carragher with Chinese Super League comeback prank|
|Zidane backs Navas and defends Benzema as Madrid aim to bounce back|
|Deportivo bring in Kakuta from Hebei after CSL rule changes|
|Matip could miss eight games without doing anything wrong - Klopp|
|United trigger Valencia´s contract extension|
|Ronaldo returns to Real Madrid´s Copa squad|
|FA fine Sagna for Instagram post|
|Nedved does not foresee more January business for Juventus|
|Rafinha injury blow for Barcelona|
|Villas-Boas fumes at CSL foreign player crackdown|
|Ibrahimovic invaluable to Manchester United youngsters - Rashford|
|Robben rejected China move|
|A-League review: Phoenix rise to the occasion to end Victory´s streak|
|Van Gaal slams English media over treatment at Manchester United|
|Mignolet: Liverpool in better position to win title than in 2013-14|
|Giroud wants Premier League title but understands China temptations|
|Tianjin forced to scrap moves for Costa, Benzema, Cavani and Falcao|
|My goal was better than Mkhitaryan´s - Giroud|
|Pochettino not interested in Argentina job|
|Kane: Tottenham can win Premier League|
|Corinthians dreaming of Drogba - Paulo Roberto|
|Coutinho calls for Liverpool focus|
|Chiellini compares Pogba to LeBron and Bolt|
|Maradona to become Napoli ambassador|
|Mihajlovic furious after Torino collapse|
|Icardi has offers from China - Wanda Nara|
|Pogba can cope with pressure - Ibrahimovic|
|´My half-time words will stay in the dressing room´ - Montella annoyed with AC Milan|