Jose Reina has not given up on Liverpool's chances of reaching the Champions League semi-finals despite their 3-1 first-leg loss to Chelsea.The Reds endured a heavy defeat at Anfield against their Premier League rivals in the first meeting of their last-eight tie on Wednesday night.Having netted three away goals, Chelsea are now in a commanding position, but Liverpool goalkeeper Reina remains optimistic of a dramatic fightback at Stamford Bridge next week.The Spaniard told Sky Sports: "The game is going to be much tougher now. We have to go to Stamford Bridge and beat them 3-1 or 3-0."But, as I said before, we are capable of winning at any stadium. We know we have to put ourselves back on track and try not to make the same mistakes."Full-back Fabio Aurelio said: "We cannot let it [the loss] affect us. We have been playing really well and the team has been really confident."For sure, the result has been a disappointment. But we know that we still have a chance."Midfielder Lucas Leiva added: "We know that it is going to be really difficult, but not impossible. We now have to think about the Premier League, and then the second leg."