McDermott felt his side were not at their best until the second half.
"First half we were a little bit too respectful, in the second half I thought we deserved to win," he said.
"In any sport what you need to do is stay in the game, I just said (at half-time) that you are right in the game at 1-0 and if we can raise our tempo and play the way we can it will give us an opportunity.
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James Wright has Sunday's forecast for the east of the region.
James Wright has the forecast for the west of the region.
Two people were rescued after they fell into Newhaven harbour in the early hours of Sunday morning.