Garry Monk vows to make personnel changes as defensive errors cost careless Sheffield Wednesday at Fulham
The Owls manager watched his side score three times in the second-half but the damage had already been done before the break with the hosts leading 3-0 ahead thanks to a brace from Aleksandar Mitrovic and a goal from Neeskens Kebano.
Atdhe Nuhiu pulled a goal back from the penalty spot four minutes into the second half but the game was essentially put out of the visitors' reach by Kebano's second goal of the afternoon on 73 minutes.
Jacob Murphy reduced the deficit five minutes later before Nuhiu's 50th goal since joining the Owls gave Wednesday hope of an unlikely comback.
However, Harrison Reed struck in injury time to put the game beyond the Owls and Monk was frustrated by "cheap defending" from his side in the 5-3 loss.
“It’s very frustrating, it was cheap defending for their goals," he admitted.
“When we got back into it, it was schoolboy defending, which makes it frustrating with the clean sheets we’ve had recently.
“I believe there are players in the dressing room who can gain consistency. But they need to learn very quickly.
“The goals we are conceding are schoolboy, goals that should only happen sporadically for any team throughout a season, not consistently.
“We cannot work as hard as we do and go through it, taking a step forward but two steps back again.
“They are poor, poor goals. If you don’t make those errors you’re in better shape for a result. But in critical moments, when it’s a case of doing the basics, head that ball, clear your lines, we haven’t done it.
“We cost ourselves and that’s been too constant throughout the season and we’re a bit tired of it."
On the need for personnel changes within his squad, Monk continued: “The majority can improve but that transition is coming, there will be personnel changes in that. To be successful that’s what we have to do.
“I have an idea of what I want to do with the squad and what I think needs to happen, I’m very hopeful that the club will help me do that, I think they understand that and I’m hopeful that will happen.”
The Owls host Middlesbrough at Hillsborough on Wednesday night in a fixture that will bring an end to their prolonged Championship campaign.