Gary Waddock feels the players need to take responsibility following Southend's 4-1 defeat at home to AFC Wimbledon on Saturday.
The visitors made the perfect start with Marcus Forss getting the first after five minutes before adding another in the 11th minute.
Timothee Dieng pulled a goal back which led to Blues’ best spell of the game before half-time, but the Dons’ fast start to the second half was to undo Waddock’s side when Forss converted from the spot.
Ryan Delaney made sure of the three points for AFC Wimbledon in the 72nd minute, and after the game Waddock rued poor starts to both halves once again.
“The results show it’s not been good enough and the players will have to take responsibility,” he said.
“It was a poor start to the first and second half which has been a common theme and that gives us a mountain to climb. We had to climb a number of mountains and it was always going to be difficult after that start.
“They’re sloppy goals and the players have to take responsibility for that as well.
“Whether that’s marking someone from a corner or a free-kick, they have to take that responsibility because the goals we do give away are sloppy that’s for sure.
“We had a good spell [in the first half] and I thought we did well in that spell but the only thing that matters is the scoreline and the scoreline today was unacceptable yet again.
“You can have a good 25 minute spell but the outcome is still the same There’s something drastically wrong with that. It can’t continue to happen but it’s not just happened recently, it’s been over a long period of time.”