KL Rahul scored a 19-ball half-century.
KXIP registered a 6 wicket win to move ahead on the points table to the 6th spot.
Despite the loss, CSK ensure a top-two finish at the end of the league stages.
Punjab lost back-to-back games and are on the verge of elimination.
Shubman Gill notched yet another fifty to help the Knights script victory at the PCA Stadium.
It is a must-win game for both the teams.
With Mujeeb Ur Rahman injured, Sam Curran to make a comeback to the team against whom he picked a hat-trick.
"I can see for myself that the standard is very high."
Curran is already getting offers to play for Team India.
The Capitals collapsed like anything to give away the game.