Oxford United boss Matt Bloomfield says that he "takes responsibility" after "getting things wrong" in their defeat to Norwich on Tuesday.
The U's conceded in the first minute before going on to lose by three as Mohamed Toure scored a hattrick for the visitors.
Fans booed the players at the break and full-time with large numbers of them leaving before the final whistle.
"It's very dissapointing, we know we got things wrong tonight," Bloomfield told BBC Radio Oxford.
"I know that I got things wrong tonight and I take responsibility for that, we played as high and as attacking as we possibly could but unfortunately the first goal puts a pin in us which is really dissapointing.
"All three goals were completely avoidable tonight from our point of view but as I said I'll take responsility for that.
"We got some things in our set-up as well as how and when we wanted to go and press, I did think we looked quite tired tonight, we've had four game in ten days and I thought we looked emotionally drained by the end."