Jersey Reds boss Harvey Biljon says his side's poor first-half was to blame for their 26-19 loss at Yorkshire Carnegie in the British and Irish Cup.
A much-changed Reds side, which had already won their pool, conceded all 26 points before the break.
"I think we got better as the game went on, but we gave ourselves too big a hurdle to overcome," Biljon said.
"We were inaccurate and when you give teams turnover ball that's when they get their opportunity."
The islanders have secured a home quarter-final in the last ever British and Irish Cup and will hope to go one better than last season, when they were beaten in the final.