Brentford midfielder Mathias Jensen admitted major disappointment after their thrashing at Newcastle United.
The Bees collapsed at Newcastle as they lost 5-1.
The Dane said: "I am very, very disappointed. We must never concede five goals. No matter who and where we play and how bad the performance is.
"I know it was a lot of individual mistakes that led to the goals.
"It happens in football, but of course we cannot concede five goals in the same match. So I'm very disappointed."