Graeme Murty had no defence for his sides dismal defending as they suffered a 7-5 defeat to local rivals Middlesbrough. The young Black Cats had to overturn a three goal deficit at the break, with an incredible nine goals scored in the second-half.
The defeat means Sunderland Under-21s are without a win since October in Premier League 2 Division 2, leaving them third bottom of the table. Murty said: "Crazy is a good term. Any game which you score five goals at home, you should expect to walk away as a comfortable winner.
"We scored five wonderful goals, contrasted with seven goals that Middlesbrough didn't have to work very hard for because our individual understanding, execution in defensive situations was awful at times. I've just said on our club media that I will defend the guys because I see the work and ethic every single day, I can't defend some of the things they did in isolated incidents. They were too easy to play against and unfortunately when that happens, you get instant feedback and that instant feedback is you concede a goal and I didn't think overall, it hurt the lads enough today."