Exeter City boss Paul Tisdale said there are no excuses for his side letting in goals from set plays as they went down 2-0 at Brentford.
The Grecians conceded the second goal just two minutes after captain David Noble was sent off for an elbow on Harlee Dean.
"There's no excuse for conceding a goal two minutes later because we were down to ten men," Tisdale said.
"We still could have got a point," the Exeter boss told BBC Radio Devon.
The loss saw Exeter slide back into the relegation zone and Noble will miss City's next three games against MK Dons, Preston and drop-zone rivals Wycombe Wanderers.
"The referee's got to give what he sees, regardless of what I think or what David thinks, he gives what he sees," said Tisdale.
"He's the captain, he's one of the first selections, so it's not too difficult to work out that he's going to be a miss.
"But we've got players who need to play, who can play, and who will play."
The Exeter boss says his side are now solely focused on trying to get out of the League One relegation zone, having taken just four points from a possible 15 in recent matches.
"I feel absolutely determined and motivated for what we're going to do in the next two months.
"I loved the way we played today, it's what we are at the moment, it's where we are.
"It's a great challenge, I'm not going to get frustrated and downbeat, we've got 11 games to go.
"It's a brilliant challenge, it's a fantastic challenge and it's what gets you out of bed in the morning," he added.