James McArthur admits Crystal Palace's
performance at Brighton
was 'poor all round' after his side conceded three first-half goals in an embarrassing defeat to their rivals.
Palace went into the game on the back of an impressive 2-0 win against Burnley, but were brought back down to earth with a bump despite their opponents playing over 60 minutes with 10 men.
'It was not good enough, especially in the first half,' McArthur admitted in an interview with reporters after the game. 'To give them three goals is not acceptable.
'Obviously the manager was not happy. Everyone knows it is not acceptable, performance or result wise. Even in the second half when we were pushing we did not put their goalkeeper under enough pressure when they have got 10 men. A poor performance all round and not acceptable.'
McArthur gave away the 23rd-minute penalty which was the catalyst for Palace's first-half capitulation, but the Scottish midfielder was insistent that referee Kevin Friend made the wrong decision.
'I have 100 per cent got the ball,' he said of his tackle on Brighton's Jose Izquierdo. 'It has never been a penalty but he gave it.'
Palace dropped to 15th following the 3-1 defeat, and now face a quick turn-around with a match away at West Ham approaching fast.
Roy Hodgson's men are three points off the drop zone, and have only won one game in their last 10.
'It is very disappointing,' McArthur continued. 'We all expected a much better performance, especially after that win [against Burnley]. It is the danger of the Premier League, we need to make sure we keep our foot on that gas.
'The only thing is we have that game very fast that we can try and make it right. When you have that full week it is hard and it eats away at you. Now we need to get going and make it right by winning at West Ham.'