Fabregas could miss Porto match with hamstring injury

Fabregas went off injured after scoring his 17th goal of the season Arsenal's Cesc Fabregas may miss Tuesday's Champions League tie against Porto after suffering a hamstring injury in Saturday's win over Burnley. The Gunners skipper scored the opener in the 3-1 victory but was forced off soon after and will undergo tests on Sunday to determine the damage done. Manager Arsene Wenger said: "How big the damage is we don't know yet. We'll see tomorrow and Monday. "We will have to make a late decision if he plays on Tuesday, certainly." Fabregas was sidelined for three weeks after aggravating the same hamstring in December against Aston Villa - a game in which he produced a 27-minute cameo appearance as a substitute and scored twice before limping off. Losing Fabregas again would be a massive blow to Arsenal, who need to turn around a 2-1 deficit when they host Porto in the second leg of their last-16 tie. And a lengthy absence would also seriously damage their hopes of winning the Premier League title - hopes they kept alive as they took all three points against Burnley to keep up the pressure on Chelsea and Manchester United. While Arsenal coped without the 22-year-old Spaniard as they overcame strugglers Burnley, they should also have given their goal difference a healthy boost. Wenger admitted: "We had plenty of chances and sometimes we missed some easy chances. "It could have been four, five or six but as well Burnley had a chance to make it 2-2 after a corner. "In the end you are happy when you miss the chances we missed today, but you get the three points." Wenger also paid tribute to Theo Walcott, who responded to criticism of his performance for England against Egypt in midweek, by capping a fine display with a brilliant goal. "I believe he has been overly criticised recently and he did what a great footballer does by giving a great answer on the pitch with a good performance," Wenger said. "That shows that he's mentally strong. I was interested as well how to see how he would respond today. I was quite sure he would respond with a good performance. Walcott boosted by return to form "But you never know how deep it affects you when you get criticised. The way he answered at his age is remarkable." Wenger is also pleased with Arsenal's collective mental strength - particularly after the horror injury suffered by Aaron Ramsey last weekend - and he is optimistic over their title chances. "We are up for it, we have the hunger, we have the talent, we have the togetherness, we have the belief and we will fight like mad," he added. "The squad was already united but Aaron's injury has given us one more reason to do it [win the title]. We want to do it for him as well."