Manchester City manager Manuel Pellegrini says atrocious conditions did not cause an ankle injury to Matija Nastasic in Hong Kong.
The Serbian was stretchered off during the second half of City's 1-0 Barclays Asia Cup triumph over Sunderland.
Nastasic appeared in significant pain as he lay on the ground clutching his right leg and both player and club face a nervous wait to learn the full extent of the injury.
"The doctor has to see him tomorrow when we arrive back in Manchester," Pellegrini said.
"I am concerned but it's better to wait.
"It wasn't the pitch though. He got a kick on his ankle but it was just part of the game."
Joleon Lescott is the front runner to replace the young defender if he is sidelined by the injury.
Edin Dzeko's ninth-minute goal was the difference between the two sides.
But it was the performances of new recruits Jesus Navas and Alvaro Negredo that caught the manager's eye.
"I know Negredo very well," Pellegrini said.
"When we brought him here we knew he was a successful player and in these two games he's demonstrated what he can do.
"Jesus is the same as Negredo. He gives our team a different option.
"He is very a difficult player (to play against)."
Sunderland manager Paolo Di Canio was enthused by his side's performance despite the 1-0 loss but admits his team is still a work in progress.
"Some players still don't know what I want from them exactly but we still have a long time," Di Canio said.
"Even some top players are never going to change their mentality, but this process can be up and down.
"There is no way we are overtraining the players though.
"Last year some of them under trained.
"We have to be careful because we have a plan we know we can pay a price."
Di Canio also played down concerns about the condition of the playing surface at the Stadium of Light.
"The pitch was difficult but it was also difficult for them because they have fantastic ability," he said.
"Thinking about it last night I thought it would be a worse pitch.
"But they put a lot of sand in the middle of the pitch and actually it wasn't that bad."
|Pochettino satisfied with Liverpool draw|
|Milner: Liverpool didn´t do enough after leading|
|Lahm ready to run the hard yards for Ancelotti|
|United have the fear factor back - Shaw|
|Tottenham 1 Liverpool 1: Rose denies Klopp´s men victory|
|Donnarumma called up as Ventura turns to youth|
|´Unique, exceptional work´ - Luis Enrique hails departed Bravo|
|Luis Enrique won´t rule out Munir exit|
|Portugal´s powerhouses divide to conquer once more|
|Ter Stegen, Mascherano in Barcelona squad for Athletic clash|
|Guardiola passion infectious, says Bravo|
|Palermo confident of Balotelli deal|
|Bayern are free of Guardiola´s chains, says Scholl|
|Ronaldo: I´ll be back in no time|
|Colombia name squad for Venezuela, Brazil qualifiers|
|Pellegrini becomes Hebei China Fortune coach|
|Klopp has ´no doubt´ over Henderson´s Liverpool future|
|Lallana understands questions over Liverpool displays|
|Real Salt Lake 2 Colorado Rapids 1: Movsisyan at the double|
|Wenger insists Perez and Mustafi are not panic buys|
|Ranieri confident of Vardy resurgence|
|Atletico send Jota on loan to Porto|
|Mourinho not rushing ´super´ Mkhitaryan|
|Bayern to meet Augsburg, Dortmund face Union in DFB-Pokal second round|
|We played more directly than Guardiola´s Bayern - Ancelotti|
|Chelsea and Arsenal want Brozovic, agent says|
|Kane: I want to stay at Tottenham for my whole career|
|Al-Khelaifi pledges new deal for sought-after Matuidi|
|Bayern Munich 6 Werder Bremen 0: Lewandowski hits hat-trick as champions cruise|
|Arda dropped from Turkey squad|
|Swansea agree deal for Barnsley defender Mawson|
|Aquilani leaves Sporting for Pescara|
|Montella excited as AC Milan close in on Pasalic|
|Lopez returns to Espanyol|
|Spalletti: Uncomfortable Roma must improve in Europe|
|Karanka confirms Ayala and Espinosa fit for Middlesbrough|
|United confirm Pereira to Granada on loan|
|Hey Jorrit - Netherlands call up Hendrix|
|Soares signs new four-year Southampton deal|
|Hernandez recovering from ´perfect´ surgery after falling down stairs|
|Gotze continues wait for second Dortmund debut|
|Montella: I will sleep easier without facing Higuain|
|PSV confirm Zinchenko loan signing|
|Schalke complete Stambouli signing|
|Ronaldo omitted from Portugal squad|
|Emery wants Matuidi to stay at PSG amid Juventus links|
|Sule gets first call-up as Schweinsteiger prepares for Germany farewell|
|Montella thrilled to retain ´irreplaceable´ Romagnoli|
|Real Madrid lose Isco to ankle sprain|
|Second Barca return sits easier with Guardiola|
|FIFA proposes two-and-a-half-year ban for Qatar official Al-Mohannadi|
|Inter set to sign Gabriel Barbosa and Joao Mario|
|Arsenal loan Asano to Stuttgart|
|Bonucci out and Higuain to stay on bench for Lazio - Allegri|
|No chance City will sign more players, says Guardiola|
|Conte unsure of Chelsea additions in ´crazy´ market|
|Conte would have no hesitation starting in-form Batshuayi against Burnley|
|Mourinho: We can think we´re in the Champions League|
|Cillessen aiming to make life difficult for Luis Enrique at Barcelona|
|Mourinho aims dig at Bayern over Schweinsteiger|
|Sevilla seal Sirigu loan signing|
|´Alcacer or nobody´ in Barcelona striker hunt|
|Recovering Ronaldo remains absent for Madrid|
|Europa League draw: Man Utd to face Van Persie´s Fenerbahce, Inter get Southampton|
|Europa League draw in full|
|Zidane brushes aside Pique´s Champions League jibe|
|Barcelona flop Douglas joins Sporting Gijon on loan|
|Simeone: Congratulations to Ronaldo, but Griezmann was better last season|
|West Ham can beat Manchester City again, says Bilic|
|Zidane reiterates desire for James to stay at Madrid|
|Granada pull off Samper loan coup|
|Guardiola was in his own world, says Muller|
|Pulis understands fans´ frustrations at West Brom|
|Henry named assistant to new Belgium boss Martinez|
|Casillas, Fabregas left out of Spain squad|
|Phelan targets six new faces before transfer deadline|
|Howe wary of Benteke threat|
|Zaza set to join West Ham, confirms Bilic|
|Sunderland goalkeeper Mannone out for three months|
|PSG favourites for Champions League group - Wenger|
|Wenger ´99 per cent confident´ on Arsenal arrivals as Perez and Mustafi wait in wings|
|Europe´s top four leagues to get four guaranteed Champions League spots|
|Pardew: Zaha not going to Tottenham|
|Bacca relishing life under Montella, aims subtle dig at Mihajlovic|
|Defiant Dortmund emerge from transfer trials in fighting shape|
|Livermore: Positive cocaine test my get out of jail free card|
|Pochettino relishing Champions League bow|
|Ronaldo wants to retire at Madrid at 41|
|CONCACAF Champions League Review: Dragon hold Saprissa, Connection and Progreso draw|
|Herrera: United out to win Europa League|
|Klopp targeting a trophy at Liverpool every year|
|Granada suspend recruit Angulo over failed drugs test|
|City vow to find Hart a new club|
|Palace blast ´ridiculous´ Zaha bid from Tottenham|
|Bravo: Barca will always be in my heart|
|Almost zero chance of Juventus signing James - Marotta|
|Liverpool´s Coutinho could miss Tottenham clash|
|Bilic ´angry and frustrated´ as West Ham crash out of Europe|
|Begiristain confident despite tough group for City|
|West Ham 0 Astra 1 (1-2 agg): Romanian minnows embarrass Hammers again|
|Hammers sign Swiss midfielder Fernandes|
|Humble Ronaldo hails team-mates following UEFA award|
|Krul joins Ajax on loan after signing new Newcastle deal|
|Leicester underdogs again in Champions League - Ranieri|
|Bale gunning for Champions League glory in Cardiff|
|Juventus additions strengthen Champions League bid - Marotta|
|Tuchel relishing ´classic´ Madrid Champions League encounter|
|Changed Burnley determined to survive|
|Ronaldo named UEFA Best Player in Europe for second time|
|Champions League draw in full|
|Guardiola handed Barca return with City in Champions League|
|Guidolin calls on Swansea to avenge Leicester thrashings|
|Eduardo completes Chelsea switch|
|Not easy to see Higuain at Juve - Cannavaro|
|Puel insists Fonte focused on Southampton|
|Ranieri knows Leicester are wanted men in Champions League|
|Puel backs Forster to take England chance|
|Cannavaro questions Juve´s European credentials after Pogba exit|
|Milan: Romagnoli not for sale, despite Chelsea bid|
|´Nobody more exciting than Michail Antonio´ - West Ham chairman|
|Pochettino prioritising transfers over new deals|
|Bravo completes Manchester City switch|
|No Barcelona bid for Mariano, insist Sevilla|
|Rashford drops down to England Under-21 squad|
|Koeman: No Everton interest in Hart|
|Ancelotti has it all - Ballack|
|Nolito eager for Champions League challenge|
|Evra dropped from France squad|
|Oliver Torres agrees Porto return|
|Ancelotti sees no need for Bayern revolution|
|Messi´s Roma goal wins UEFA award|
|Maradona questions Messi U-turn|
|Napoli pledge funds to earthquake victims|
|Hughes confirms Stoke interest in Manchester United defender Jones|
|Bentaleb completes Schalke switch|
|Klopp: Balotelli decision not imminent|
|Manquillo makes Sunderland move|
|Barca complete Cillessen signing|
|Hummels surprised by criticism from Dortmund fans|
|Blatter will accept CAS ruling|
|I do not want Sturridge as a wide player, insists Klopp|
|Schalke close in on Bentaleb and Stambouli|
|Wanted man Sukur denounces coup|
|´Everyone knows my best position´ - Sturridge unhappy at wide role|
|Villa says Alcacer ´knows what to do´ amid Barcelona links|
|Solo ´saddened´ by United States axing|
|Drinkwater signs new Leicester deal|
|Spanish clubs dominate as history beckons for Ancelotti - the Champions League in numbers|
|Lopes sets sights on Lille silverware and Portugal breakthrough|
|´A scholar and a monster´ - Surgeon hails ´unique´ Ronaldo|
|MLS Review: Altidore scores as Toronto move top in east, Galaxy rally|
|CONCACAF Champions League Review: Tigres win, Dallas held|
|Victory lure Rojas back to Melbourne|
|Chaplow suspended two games for verbal abuse, denies homophobia|
|Eduardo farewells Dinamo Zagreb amid Chelsea speculation|
|Zidane shoud give James more respect - Asprilla|
|Solo suspended from USA women´s team for six months|
|Guardiola understands fans unhappiness over Hart situation|
|Burnley and Middlesbrough sent packing from League Cup|
|Coleman baffled by Ramsey´s treatment at Arsenal|
|Six of the best for Gladbach as Rostov rout Ajax|
|Leicester face Chelsea, Northampton host United in League Cup third round|
|Cillessen set to fly out to Barca to complete move|