Zoltan Gera fears Fulham are struggling to cope with the demands of the Premier League and Europe.
Roy Hodgson's men fell to their third straight defeat after going down 1-0 to Arsenal at Craven Cottage on Saturday.
Defeat was harsh on the Cottagers as they dominated for long periods of the game and were thwarted on numerous occasions by inspired Arsenal goalkeeper Vito Mannone.
Fulham sit fourth from bottom of the table and Gera admits it has been hard to juggle the extra schedule of the Europa League with the Premier League this term.
"If we keep playing like this and putting in this sort of performance then we will not have anything to worry about. We were just unlucky," Gera told The Sun.
"It's been difficult this season because we are in Europe and we need to keep a balance to make sure we keep getting results.
"Their keeper made some great saves. It was a good derby."