LONDON (AFP) - Arsenal manager Arsene Wenger will make a decision on whether Cesc Fabregas will play in the vital Champions League game with Porto in the next 48 hours after the Spain star's latest injury setback.
Soon after scoring in Arsenal's 3-1 win over Burnley in the Premier League at the Emirates Stadium on Saturday, Gunners captain Fabregas suffered a recurrence of his hamstring problem.
He is now rated doubtful for Tuesday's last 16 second leg tie against Porto, where Arsenal will try to overturn a 2-1 deficit.
"Cesc has a hamstring and how deep the damage is we don't know because it's too early," said Wenger.
"We will see tomorrow (Sunday) or Monday, it will be a late decision on whether he plays on Tuesday."
Fabregas's injury came just a week after Arsenal lost fellow midfielder Aaron Ramsey for the rest of the season with a broken leg.
But there was better news for Wenger in the performance of England winger Theo Walcott on a day which ended with the third-placed Gunners two points off the top of the table after champions Manchester United returned to the summit with a 1-0 win away to Wolves.
Walcott, after a disappointing display during England's midweek 3-1 friendly win over Egypt at Wembley, was subjected to a blistering attack by former international Chris Waddle.
Waddle insisted Walcott did not understand football but the 20-year-old produced a menacing performance at the Emirates to silence his critics.
"I was delighted with Theo because I think he did what a player has to, not talking in the newspapers but doing his talking on the pitch," said Wenger.
"He didn't answer any critics other than it was a good performance today. He showed he is mentally strong.
"I was interested to see how we would respond and I was quite sure Theo would respond with a good performance.
"You never know how deep it affects you when you get criticised and the way he answered it at his age was remarkable."
Turning to Arsenal's quest for the title, which continues next week with another match against relegation-threatened opposition in Hull, Wenger said: "It's down to our consistency. If we win our games we will be there, that's for sure. Every game demands full focus and commitment, especially against teams fighting to stay up.
"Next weekend we play at Hull and we can expect the same sort of game. We had the chances to score plenty of goals (against Burnley) and we didn't take them. It was tight until the end when we could have scored four or five."
Fabregas gave Arsenal a 34th minute lead before his premature exit.
Burnley, who only have crisis club Portsmouth below them in the table, hit back through David Nugent's equaliser five minutes into the second half.
But Walcott's excellent strike on the hour and a goal from Arsenal substitute Andrey Arshavin condemned the Clarets to their 14th away defeat of the season.
Nevertheless Burnley manager Brian Laws said: "There were a lot of pleasing things to come out of it, despite the result.
"We responded much better in the second half because too many times the players have folded this season after going a goal behind.
"It was nice to get the goal and then to actually look in a comfortable position. We knew Arsenal were going to create chances and we lived a charmed life on many occasions.
"But Arsenal took their chances whereas we snatched at ours and that is the difference between the two sides," Laws added. "We had good spells and we've got to make them count.
"I'm going to take a lot of positives," he insisted. "This isn't going to be the game that decides our future in the Premier League, the ones at home will do that. I still think we can get that first away win."
|52||N. Bendtner||10' 25' 44' 90+1'|
|Coach: A. Wenger|
for T. Rosický 57'
for S. Nasri 73'
for A. Arshavin 77'
|Liverpool have to start better - Lucas|
|USA simply too good - Sasaki|
|Portland Timbers 1 San Jose Earthquakes 0: Jewsbury wins it in stoppage time|
|No move yet for Van Persie|
|Lloyd wins Golden Ball, Silver Boot awards|
|Mascherano: I never grabbed Banega|
|Dunga requested Brazil not appeal Neymar´s suspension|
|United States 5 Japan 2: Lloyd stars with hat-trick|
|Fiorentina deny Inter criticism|
|Nani relishing Fenerbahce opportunity|
|Newcastle hold talks over Northampton youngster|
|Cuadrado´s agent plays down Chelsea exit rumours|
|Liverpool´s Alberto set for Deportivo loan|
|Leverkusen suffer surprise defeat, Stuttgart hit six|
|Inter ´dismayed´ at Fiorentina vice-president´s Salah Twitter outburst|
|Blaszczykowski ruled out of Dortmund´s Asia tour|
|Gerrard gets the beers in for LA Galaxy fans|
|De Gea coy over Real links|
|Former Brazil star Carlos handed Delhi reins|
|Ciftci will not push through Celtic switch – agent|
|In-demand Mitrovic considering Roma offer|
|Lehmann calls on Cech to ´get over´ Chelsea|
|Marlos double sinks Monaco|
|Mauritius 0 South Africa 2 (agg 0-5): Bafana set up Angola qualifier|
|Keane relishing Gerrard arrival|
|Palace confirm Cabaye interest|
|Hamburg bring in Spahic after head-butt ban|
|Blatter hits out at France and Germany over World Cup votes|
|Sanchez: World Cup exit spurred Chile to Copa glory|
|Jojic makes Cologne switch, Santana move falls through|
|Carrillo keen to get going at Monaco|
|Micronesia thrashed 38-0 as Fiji triumph in Olympic qualifier|
|Schalke stunned by ´machine´ Caicara|
|MLS Review: Keane shines at Gerrard´s Galaxy unveiling|
|Counter-attacking the key for Japan|
|Jimenez happy at Atletico|
|Gerrard predicts ´successful future´ with Galaxy|
|Iniesta can´t see Real selling Ramos|
|Keshi sacked as Nigeria coach|
|Three finals, three defeats for Messi, Mascherano|
|Nani close to Fenerbahce move|
|Sampaoli revels in ´unbelievable joy´|
|Bravo: Copa victory a dream|
|Martino: Argentina should have won|
|Chile 0 Argentina 0 (4-1 on penalties): Hosts end trophy drought|
|Germany 0 England 1 (after extra time): England make World Cup history|
|Kenya 0 Ethiopia 0 (agg 0-2): Hosts sent out of CHAN qualifiers after second penalty miss|
|Dortmund put 17 past Olympians, Bremen hand out thrashing|
|Dinamo Zagreb confirm arrests of coach and club president|
|I didn´t know who Wimbledon guest Klopp was - Brown|
|LeBron James backs Liverpool captain Henderson for FIFA 16 cover.|
|Ramos: I am not negotiating with anyone|
|Valencia complete Mina swoop|
|United States v Japan: US seek final redemption|
|Hanousek consigns Celtic to defeat|
|Roma confirm Dzeko interest|
|Arsenal forward Podolski completes Galatasaray switch|
|Warm Dortmund welcome delights Tuchel|
|Silva vows to fight for Madrid place|
|Mancini hints at Shaqiri and Santon departures|
|Bojan raring to go after return from injury|
|Babel backs Firmino to shine at Liverpool|
|Falcao must wait to impress, warns Chelsea favourite|
|Bartomeu: Deal in place for Turan|
|Parejo re-signs with Valencia|
|MLS Review: Sounders return to winning ways|
|Klinsmann unhappy with USA performance|
|High hopes for Paraguay - Diaz|
|Gareca: More to come from Peru|
|Gerrard had European offers|
|Argentina out to spoil Chile´s party - Martino|
|Sampaoli: Chile won´t change style|
|Di Maria will come good at United - Rojo|
|Peru 2 Paraguay 0: Gareca´s men finish third at Copa|
|United States 4 Guatemala 0: Klinsmann´s men win comfortably|
|´I’d prefer no-one to know my name´ - Bassett|