Exeter City manager Paul Tisdale says his team must improve after their 2-0 loss at Barnet.
The defeat left Paul Tisdale's side 13th in League Two with one win in their last seven matches.
"I think we were below par, we have been a number of times away from home," Tisdale told BBC Radio Devon.
"We have to put that right and I'm disappointed with the result, but more disappointed with the way we played, it wasn't good enough."
Exeter face eighth-tier side Didcot Town in the FA Cup first round on Sunday, a year after they lost to non-league Warrington Town at the same stage.
"We've got some work to do, there were one or two good performances in there, but there were plenty that weren't up to the level," Tisdale added.
"There are certain players that will have to pick up their performances if they want to stay in the team, and as a group we have to be more competitive and we have to play our football better.
"We're well into the season now, I know we're in mid-table, I know we've got ambitions, but we can't even begin to think about those ambitions until we increase our levels of performance."