"Jose came and congratulated our players. I thought that was very classy," Kemp is quoted as saying by the London Evening Standard. "Tony [Pulis] is probably having a nice glass of wine, celebrating this win.
"Our players have put in a magnificent effort today. They've been rightly rewarded and for him to recognise their effort I thought was very good.
"It's big for the club and it's big for the players. When you beat a top team it gives them that little bit more confidence, credibility and belief to go on. It will be very important for this group of players and the club."
The victory lifts Palace five points clear of the Premier League relegation zone.