Rayo Vallecano coach Paco Jemez insists his side will have "no fear" when they head to injury-hit Valencia aiming to put an end to two straight losses in the Primera Division.
Rayo go into the game only two points and three places behind their rivals and Jemez sees no reason why his side cannot end their recent poor form by claiming a famous victory at the Mestalla.
Jemez said: "We are capable of winning and if we were not there would be no point going. Our situation is very good at the moment but Sunday gives us the opportunity to make it a lot better.
"We are going to Valencia with the intention of winning. We have had many years of going to the Mestalla and not winning, but we must recognise that.
"The fact Valencia have not started their season well does not mean anything. We have to play with no fear and trust ourselves like in all our other games. We need to press, attack and let go with our ideas."
Valencia are in form ahead of the game, with four wins out of their last five, including a midweek Copa del Rey success at Osasuna.
But the hosts have plenty of fitness concerns with Tino Costa facing a late test and Nelson Valdez, Victor Ruiz and Fernando Gago all definitely ruled out.
Defender Aly Cissokho said: "The team is on a good run of form at the moment and now it is up to us to end our year with two wins."