Despite challenging conditions, Jadeja scored a valuable 26-ball 43 to help CSK post a total of 167 for 9 after Sam Curran asked to bat first.
The 35-year-old left-arm spinner then proved himself to be a man of the ball, taking three crucial wickets in just 20 runs in the middle overs.
Ultimately, Kings XI Punjab failed to reach the target and managed only 139 runs in 9 out of 20 matches.
Jadeja’s all-round performance was a key factor in CSK’s overall victory, allowing them to recover from their recent defeat and regain their winning form in the game.
Returning pacer Tushar Deshpande (2/35) and batsman Simarjeet Singh (2/16) also took wickets.
when things happen
Mitchell Santner was competing in his first race of the season and he did well in three rounds at 1/10.
PBKS were eyeing a sixth consecutive win over CSK in the IPL but found themselves slumped to a 78-78 victory in a game-turning game against Jadeja.
Five-time champions CSK returned to winning ways and jumped to third place in the table after losing three of their last four games.
CSK currently have 12 points and have three games left to seal their playoff spot.
PBKS – eight points from 11 games – dropped to eighth place after suffering their seventh defeat of the season.
New Zealand left-arm spinner Santner got ready for CSK early on. Bowling with the new ball, he conceded just four runs in two deliveries and took the crucial wicket of Shashank Singh (27; 20b, 4×4) in the match.
Deshpande created a double whammy, dismissing Jonny Bairstow (7) and Rilee Rossouw (0) with three wickets.
PBKS found some rhythm as Prabhsimran Singh and the in-form Shashank attacked the CSK bowlers to score 31 runs to end the powerplay game on a high .
Prabhusimran bowled out Richard Gleeson with a four and a six in the 15th over, while Prabhusimran battled Deshpande, batting He hit two fours and a six.
It seemed to be one-way traffic for the home team, but Santner cleverly changed his pace and Shashank struck the ball long on.
PBKS cruised to a top score of 62/2 before losing half the team in 9.4 overs.
This ended the joyous partnership of 36 balls and 53 runs between Shashank and Prabhu Simran. Jadeja soon opened the account and sacked Prabhu Simran.
Prabhu Simran looked comfortable but the opener was caught by Jadeja’s full ball at stumps.
The right-hander looked like he wanted to break inside out, but a lack of speed meant he couldn’t clear long and backup outfielder Samir Rizvi caught the ball with ease.
Simarjeet chipped in with a wicket in his first over, dismissing Jitesh Sharma for a first-ball duck.
Jadeja conceded just three runs in the remainder of the match and completed the decisive knockout of Kuran (7) and the in-form Ashutosh Sharma (3) in the 13th round.
As the runs dried up, Curran began to feel the heat and accepted a Widja pass from Jadeja, but he passed the ball straight to Santner at long-on.
Ashutosh hit his big shot by mistake and was caught by Simajit at third man, giving Jadeja a three-pointer and then died.
Earlier, in the Power Play, CSK were at 60/1 with captain Ruturaj Gaikwad (32) and Daryl Mitchell in the middle, In an entertaining 57-run partnership, Chahar triggered the collapse, taking two wickets in two balls.
The partnership was terminated as CSK lost 3 wickets in 11 balls, with Harshal replacing the dangerous-looking Mitchell (30; 19b, 2×4, 1×6) in a controversial DRS call .
Harshal returned after his death, sacked Shardul Thakur (17) and MS Dhoni When CSK’s hopes of revival evaporated, there was a golden duck.
First, he cleared Thakur with a slower side cut, while the CSK fans in Dharamshala waited for another piece. Dhoni The Magic have eight balls left.
But the Yellow Army came away in disbelief as talisman Dhoni departed off the first ball, unable to counter a slow yorker executed to perfection by Harshal.
With no time to put down the bat, Dhoni was knocked off his stump.
Punjab kept chipping away at wickets but Jadeja remained resolute, quietly picking his way to the odd boundary and six to take them to a par score.
After taking just two runs for two wickets in a silent penultimate match, Jadeja controlled his nerves and hit his boundary against Ashdeep in the final over and six points.
