Roberto Martinez has urged Everton to respond to their loss to Manchester United by bouncing back in a fixture that has caused them numerous problems down the years.
A week on from the 3-0 home defeat to United, the Merseysiders travel to Arsenal on Saturday looking to end a winless away streak that has stretched the entire 19 years of manager Arsene Wenger's reign.
And Toffees boss Martinez said on Thursday ahead of the Barclays Premier League clash at the Emirates Stadium: "(The United match) was a really bad day for us.
"It was one of those results you could not see coming or expect.
"We want to be back to reaching our level, the level we showed consistently this season - and we will have to do it at one of the hardest arenas in the league and against one of the hardest oppositions."
Roberto Martinez insisted his team's defending was not to blame after Everton suffered a thrashing at Dynamo Kiev that ensured there will be no British quarter-finalists in European competitions this season.
The Toffees went into Thursday's Europa League last-16 second leg in the Ukrainian capital leading the tie 2-1, but were thumped 5-2 at the Olympic Stadium to crash out 6-4 on aggregate.
Fine strikes from Dynamo's Andriy Yarmolenko and then Romelu Lukaku made it 1-1 on the night before Everton's poor defending allowed their hosts to score three times without reply through Lukasz Teodorczyk, Miguel Veloso and Oleg Gusev.
Martinez admitted Everton had not defended well enough but also stressed there had been some "incredible finishing" from Dynamo.
The Everton boss Roberto Martinez has declared "the FA Cup is unique" after Aston Villa boss Paul Lambert said the majority of Premier League sides saw the competition as a "distraction":
Everton have confirmed the appointment of Roberto Martinez as the football club's new manager after agreeing a four-year contract.
The Spaniard resigned from Wigan following their recent Premier League relegation, which came days after the team's remarkable FA Cup final victory over Manchester City.
Martinez succeeds David Moyes, who left Goodison Park to replace Sir Alex Ferguson at Manchester United.
Manager Roberto Martinez has asked to leave Wigan and has been given permission to speak to Everton, chairman Dave Whelan has confirmed.