Atletico Madrid have confirmed Raul Garcia suffered a sprained ligament in his right ankle during their 2-1 win over Porto on Tuesday.
The midfielder was forced off during the UEFA Champions League clash 11 minutes from time, in a game that saw Atletico come from a goal down to win.
After an MRI scan was performed, the club stated on their official Twitter account that the 27-year-old suffered a "grade-two sprain of the lateral ligament of the right ankle".
The injury was the only sour point of a night for Diego Simeone's men as they moved top of Group G thanks to an Arda Turan winner with just four minutes off normal time remaining.
Simeone urged his side to take each game at a time, but stated his delight at Atletico's performance at the Estadio do Dragao.
"We are very happy – we did a great job. It was a fantastic response to what was an adverse situation," he said.
"The first 25 minutes were hard for us, Porto were very strong then. When we changed our way of playing in midfield from the 30th minute, the game also changed.
"We made key tactical switches which helped us as we looked to play into spaces and get closer to their penalty area.
"The lead-up to our second goal was something we had worked on. There is happiness at achieving a very important result.
"It's incredible the reaction we produced tonight. Everyone put in a great performance. The team must be congratulated.
"We will go on taking things game by game."
|Coach: Paulo Fonseca|
for Josue 60'
for L. González 68'
for E. Mangala 89'
|Juventus v Cagliari: Festa´s men hope for distracted hosts|
|Everton to wait on Lennon discussion - Martinez|
|Magical Messi wary of Bayern backlash|
|Kaka eager for Gerrard´s MLS arrival|
|No pressure from FA on black players - Taylor|
|LFP plans legal action after games suspended|
|Doyle to join Rapids by month´s end|
|MLS Preview: Red Bulls, City to contest first New York derby|
|Real Salt Lake 0 Los Angeles Galaxy 0: Goalkeepers dominate after lightning delay|
|Copa Libertadores Review: Guarani, Sao Paulo in box seat|
|Subotic wants Europa League spot|
|Ligue 1 Preview: Cabaye challenges leaders PSG|
|Bayern ´threw the game away´ against Barcelona - Boateng|
|Sevilla favourites tag motivation for Fiorentina - Montella|
|Cuadrado needs time - Bacca|
|Guardiola: Bayern didn´t lose because of Messi|
|Luis Enrique hails team performance after Messi masterclass|
|Muller hopeful of second-leg fightback in Munich|
|Ribery set to miss Bayern´s second leg with Barca|
|Messi is impossible to describe, says Mascherano|
|Barcelona 3 Bayern Munich 0: Messi lives up to Guardiola´s billing to put Barca on brink of final|
|Spanish federation to suspend all competitions from May 16|
|AFC Champions League Review: Jeonbuk cruise into last 16 but Seongnam crash out|
|McClaren reiterates commitment to Derby amid Newcastle speculation|
|League One play-offs preview: Grayson grateful for Preston´s second chance|
|Belfodil agrees Parma contract termination|
|Sevilla still on track - Emery|
|Duff has Upton Park red card overturned|
|Alexis Sanchez can be as good as he wants - Zamorano|
|Torino 0 Empoli 1: Padelli howler proves costly|
|Real Madrid top Forbes list for third straight year|
|Arnesen backs ´champion´ Van Gaal for success at United|
|McCarthy robbed at gunpoint|
|Paris Saint-Germain v Guingamp: Champions out to pile pressure on Lyon|
|Benitez agent to meet with De Laurentiis|
|Chelsea´s ´boring´ style not an issue - Arnesen|
|Ramos laments poor Turin display|
|Southampton to place trust in academy - Reed|
|Bale not listening to failed managers - agent|
|Bigirimana believes relegation could be good for Newcastle|
|Chelsea still hungry for Liverpool win - Matic|
|Bournemouth to invest in players before stadium|
|Police visit Sports Direct over Rangers investigation|
|Guard of honour should spark Liverpool - Lallana|
|Liverpool to sign teenage Portuguese star|
|Thiago would´ve stayed at Barca under Pep|
|Copa Libertadores Review: Tigres advance to quarters|
|Houston Dynamo 0 San Jose Earthquakes 1: Kinnear claims triumphant Texas return|
|Martinez: Everton got carried away during unbeaten run|
|Neymar has flourished with captaincy - Dunga|
|A-League Preview: Victory, City to meet in biggest Melbourne derby|
|Ramos: Real Madrid in box seat|
|´Bale gave Real nothing´ - Keane|
|Hill backs Ramsey for QPR job|
|Ancelotti confident of Real revival|
|Allegri rues late Llorente miss in Juve triumph|
|Juve sent a warning - Pirlo|
|Inverness Caledonian Thistle 2 Dundee United 1: Ofere and Williams keep European dream alive|
|Juventus 2 Real Madrid 1: Spot-on Tevez earns first-leg lead|
|Sturridge hip surgery a success|
|Coloccini calls for unity as Newcastle target survival|
|Doumbia cleared to make Milan trip|
|Harper calls for Hull unity|
|Guardiola not distracted by Barca homecoming|
|No defence can stop Barca star Messi - Guardiola|
|Neuer ready to face Barca strike trio|
|Napoli v Dnipro: Benitez seeks to make experience count|
|Jones ready for United return|
|Injury rules Oscar out of Brazil´s Copa squad|
|Mazinho proud ahead of Barca v Bayern contest|
|Sevilla v Fiorentina: Kolodziejczak confident ahead of semi-final test|
|Skipper Soriano set for Villarreal return|
|Martinez wary of Pienaar risk|
|AFC Champions League Review: Holders Western Sydney out due to last-gasp Seoul winner|
|Barca focused ahead of Pep return - Luis Enrique|
|Messi has ´no problem´ with Luis Enrique|
|Relegated Tranmere appoint Brabin|
|Ujah agrees Werder transfer|
|Magath backs Guardiola to remain at Bayern|
|Mathieu out of Bayern clash|
|Burnley appeal Duff dismissal|
|Setif drawn in Algeria-heavy Champions League group|
|Terry calls for new Drogba deal|
|Saul agrees bumper Atletico deal|
|Arsenal need to finish season strongly - Wenger|
|New Bilbao deal for Gurpegi|
|Pepe puts Morata friendship aside for Champions League match-up|
|Terry: Too long between titles|
|Hazard can be as good as Messi, Ronaldo - Fabregas|
|Carlisle ´deeply ashamed´ about suicide attempt|
|Tevez planning to win Champions League with Juve|
|Blatter ´knows absolutely nothing´ - Maradona|
|Allegri: Ancelotti a smart man|
|Sunderland academy coach to manage Oldham|
|Primeira Liga Review: Braga secure Europa League berth|
|Bruce backing Hull to respond against Burnley|
|Almeria 2 Celta Vigo 2: Bifouma, Zongo inspire hosts´ comeback|