Coventry manager Steven Pressley was disappointed with the goals his side conceded in their 2-1 loss against Carlisle.
The Sky Blues had the better of the first half and after Franck Moussa's 14th of the season they should have doubled their lead but debutant Chuba Akpom was denied by a marvellous save from Jordan Pickford.
Carlisle came out rejuvenated after the break and, after Liam Noble's fine strike, substitute Sam Byrne, on loan from Manchester United, secured the win after he latched on to John Fleck's poor header with 30 minutes to play.
Pressley said: "We played well in the first half and thoroughly deserved the lead at half-time and could've had a couple of others.
"In the second half I feel that we didn't win enough important tackles and I felt that we weren't as aggressive in our passing. It wasn't until we lost the second goal that we started passing more aggressively.
"It's a disappointing result. They were two poorly conceded goals because, on the whole, I didn't think they created too much. To lose a game where you don't give up many chances is obviously disappointing.
"I thought Chuba and Michael [Petrasso] did great, they both applied themselves really well and I think they're going to be terrific acquisitions for the club. I was really pleased with their performances."