The London club have been in very good form over the past few weeks to ease any relegation concerns.
Palace are now safe with four games to go in the top flight this season, drawing 1-1 with Fulham at the weekend.
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Post-game, Glasner said: At the end the result is okay, but I'm really pleased with the performance again. I think it is a totally deserved point.
The feeling is we were the better team and then suddenly it's 0-1, you are down. It's our third game in six days and we had cleared staying in the Premier League. Many teams can then be 'okay', don't give the effort that they need to come back.
But the players had a lot of power. They wanted to get this point, and then I think we got our reward with an amazing goal from Jeffrey Schlupp. Again, a very good impact from all our substitutes, getting new energy on the pitch."