Gareth Barry has admitted that he is at a loss to explain Everton's poor form in the Premier League.
The Blues are on course to book their place in the last 16 of the Europa League following last week's 4-1 win over Young Boys, but Roberto Martinez's men are down in 12th on the domestic front.
Barry told reporters: "It's tough to put your finger on anything. If you look at our performances it does seem as if in the European campaign we've been able to get away from our problems in the Premier League, there's no pressure on us and were able to perform.
"But in the Premier League we've been unable to get a consistent run of games and build that confidence level up to where we were in the previous campaign.
"Also we're still hopeful that if we can perform in the Europa we can transfer it to the last 12 games in the Premier League."
The Toffees, who travel to Arsenal on Sunday, are currently 19 points off the top four.