Alan Pardew felt his side performed well against Swansea City, but admitted that playing their second game in three days looked to have taken it's toll on the Eagles.
"It was tough, you could tell it was our second game in three days!" He said after the 0-0 draw.
"We're a high energy side, but we lacked that spark. We lacked a bit of imagination, a bit of flair, but I thought the discipline was there. We just couldn't find a way through.
"We're a fit side. We just maybe lacked that little spark, that little edge."
It was a frustrating afternoon, in which Palace probed for a way through the Swansea backline and stayed guarded against counters, meaning neither side really let the game open up too much.
Midfielder Yohan Cabaye received a harsh booking for a challenge on Jack Cork, which means he will now miss the visit of Chelsea to SE25 on Sunday 3rd January.
Asked if the 29-year-old's absence will be a blow, Pardew replied: "Of course, this is a great player for us. We'll have to make do without him.
Cabaye joins the likes of Yannick Bolasie, Connor Wickham, Dwight Gayle and Bakary Sako on the sidelines, with all four first team players ruled out through injury.
You can watch a full video interview with Alan Pardew and his post-match press conference for free HERE.