Barcelona will be looking to Argentine forward Lionel Messi to turn around their King's Cup tie against Real Zaragoza on Wednesday, as they trail 4-2 going into their quarter-final second leg in the Nou Camp.
The Argentine forward came off the bench to score twice in six minutes as his side laboured to a 3-0 win over a stubborn Real Mallorca in the league on Sunday.
Coach Frank Rijkaard said: "Everyone knows Messi is the type of player who can swing a game.
"On Sunday he was in the right place at the right time, scored twice, and could easily have had a third."
The victory marked a return to normal service for Barca who had fallen to their first defeat in 25 outings in Zaragoza, in last week's first leg.
Victor Munoz's in-form side, cup winners in 2004, let slip a two-goal lead at Valencia on Sunday to draw 2-2, but in forwards Ewerthon and Diego Milito have enough firepower to trouble the strongest of defences.
The winners of their tie go on to meet Real Madrid in the semi-finals.
DEPOR APPEAL
Deportivo Coruna have gone to the courts to have the last 46 minutes of their match against Valencia suspended pending an appeal hearing.
Their quarter-final second leg was abandoned after 44 minutes last week when a linesman was hit on the head by an object thrown from the crowd in Valencia's stadium.
Valencia, who had been reduced to 10-men following the early dismissal of Carlos Marchena, had just taken a 1-0 lead through David Villa, to level the aggregate scores at 1-1.
According to the rules the match will start for one minute plus time added on, before continuing after a regulation half time break.
The winners will meet Espanyol in the other semi-final.