Juventus captain Alessandro Del Piero has revealed the players have asked for an extra day's preparation as they want to put their "devastating" week firmly behind them.

The Serie A giants have had a week to forget after they were dumped out of the Europa League following a 4-1 defeat at Fulham - a humiliation that came shortly after their draw against Siena where they let slip a three-goal advantage.

Juve completed a hat-trick of defeats on Sunday when Antonio Cassano scored the only goal of the game in the 77th minute with a stunning strike for Sampdoria.

The Bianconeri are facing another crisis again, following an improved run after Alberto Zaccheroni replaced the sacked Ciro Ferrara in January and, in an attempt to put things right, are set to go on a training camp a day earlier ahead of Thursday's trip to Napoli.

"We asked to go to training camp so we could spend a bit of time together, to rediscover our physical and mental energies," said Del Piero.

"It was a devastating week, from the game against Siena to the exit from the cup, to Cassano's great goal in an evening where we were equal to each other until that time.

"There are still nine games left and we can't make any mistakes."

The defeat saw Samp leapfrog Juve in the standings, leaving the Bianconeri in sixth, two points behind fourth-placed Palermo. And Zaccheroni admits he will consider himself a failure if Juve fail to qualify for the Champions League.

"If we don't succeed in getting to fourth place that means that I have failed in my mission," he said.

"This is a squad which has to rediscover its strengths. I think we are still on course for fourth place. Certainly, right up until the end, we will never give up: both me and the squad see it as a challenge to win."