Valencia boss Cesare Prandelli says his players took their eye off the ball after conceding a last-gasp equaliser in a 2-2 draw with Malaga on Sunday.
The struggling six-time former La Liga winners, who ended the weekend in 16th place in the Primera Division standings with just three wins from 14 games, found themselves trailing after just three minutes following Pablo Fornals' goal.
There was a quick turnaround, however, as Rodrigo levelled on seven minutes before a 34th-minute goal from Alvaro Medran handed the hosts a slender lead.
But despite playing some good football and holding onto their lead until the dying minutes, Valencia ultimately conceded in the third minute of stoppage-time, when Fornals netted his second of the match.
It was a cruel blow for Prandelli, and the Italian tactician has urged his players to remain optimistic as they look to get their campaign back on track.
He told the club's website: "We always have to be optimistic. We need to see the strength and way to overcome obstacles.
"The reality is what it is, but we have to get back up.
"The team were only thinking of the result when we went ahead, and not about our play. We are trying to be a strong, united and organised side."
Goalkeeper Diego Alves added: "We go away sad again. There was no excuse, Malaga have played well. We let slip two points that were important for us.
"The situation is what you can see but the championship is not over now. We have to all accept where we are.
"We all have the desire to turn this around and we are working well during the week. We need to get back to winning.
"The fans have reason to be unhappy. It is us that need to sort this out, we are aware of the situation and what we have to do for Valencia CF."