Arsenal manager Arsene Wenger has admitted that Swansea deserved victory in Saturday's 2-0 defeat at the Emirates.
Swansea took all three points with two well-taken Michu goals, and Wenger said that his side were not "sharp enough" to get anything from the game.
"We were not good and Swansea deserved to win," BBC Sport quotes Wenger as saying. "We looked very jaded after two away games in the Champions League.
"Where we were guilty was with three minutes to go at 0-0, if you cannot win you must not lose.
"I believed we tried very hard to get back into the game, but we weren't sharp enough. We didn't create enough chances, we will work on it. Our fans cannot be happy when we do not win games and what we produced today is not enough to keep our fans happy."
Arsenal have slipped to 10th in the Premier League after the defeat.