Whitehaven head coach David Seeds believes his side showed a lack of sharpness despite Sunday's 22-10 derby victory against Workington Town.
Haven had a three-week break between fixtures in the lead-up to the game, while Town had a fortnight to prepare.
"I don't believe we were at the races," Seeds told BBC Radio Cumbria.
"That three-week break probably hasn't done us any justice and we looked tired, in there we've done a lot more defence than we should have."
Tries from Max Wiper, Craig Calvert, Loz Hamzat and Carl Cice for Haven were the difference, with replies from Joe Pedley and Neil Fraser not enough to secure a bonus point for the visitors.
"I'm proud of the effort we put in," Seeds continued.
"Credit to Workington though, they were outstanding, got through their sets of six and put us under a lot pressure.
"We came up with some unforced errors and they had a great kicking game."
Meanwhile Town joint-coach Gary Charlton rued his side's lack of cutting edge, having failed to add to their two tries despite a string of opportunities.
"We win matches by taking chances, we haven't taken them today. We've bombed two or three tries that the lads would take 99 times out of a 100," Charlton said.
"It's come back to haunt us again, we're getting so close and then throwing it away at the last minute because of lapses in concentration."
Next up for Town is the visit of league leaders Swinton, with seven points separating the Cumbrians in their bid to overtake the club at the top of the table.
"It's been a tough hard game, and there have been a few cobwebs knocked out," he said.
"Every game now is a final between now and the end of the season, we haven't got what we might have deserved if we had taken our chances we'll take it on the chin."
Whitehaven move up to fourth in Championship One, level on points with second placed Town.