After a solid first half defensive performance against Arsenal, Tony Pulis was frustrated to see his side concede so early in the second period as they ultimately fell to a 2-0 defeat at the Emirates Stadium.
A brace from England international Alex Oxlade-Chamberlain proved the difference between the two sides, as the Gunners returned to the top of the table.
Pulis was pleased with the overall work ethic of his side, but admitted he was disappointed with the manner of Arsenal's opening goal.
"We were really disappointed to give a poor goal away just after half-time," he said.
"We are disappointed with their first goal because he has run off the back of two of our players. We had Chamakh dropped in but he got away from him but Joel Ward has come in the dressing room and held his hands up because his body shape was poor.
"This is what happens though against the top clubs when you switch off for a couple of seconds, it costs you a goal. It's a shame for Joel because he has been great for us this season.
"Up until that point, even though Arsenal had a lot of the ball, we looked pretty comfortable."
Palace soon had a chance to get the game back on level terms though when Cameron Jerome was denied from point-blank range by Wojciech Szczesny.
"We had a big moment 90 seconds later and we don't take it, that is the difference in lots of respects," Pulis added.
"Against the bigger clubs you have to take your chances and Arsenal are a very good side who move about very quickly and have their moments where you are hoping and praying they don't take their chances.
"I can't criticise my players though as they worked very hard today."
After a busy deadline day, the boss feels he has a chance to compete against those teams in and around the Eagles in the bottom half of the table and is buoyed by the news that striker Glenn Murray is not too far away from a first team return.
"We have put ourselves in a position where we can challenge with about seven other clubs and that's what we wanted to do," Pulis said.
"If you look at it from the position we were in when I came to the club it has been remarkable. The players have done a great job but what we have got to do now is try and stay in it right until the end and get as many points as we can. We have played all the top teams away from home so it is now up to us.
"Glenn Murray is not far away, he is going to have his second game on Monday, that gives us a great chance to get him back involved because we need goals and with Joe Ledley and Thomas Ince coming in, we have signed players who will score goals and that is what we need.
"We want to keep our organisation and our resilience and want to show the spirit we have over the past couple of months, but those three hopefully will give us more of a threat."