'Amar Singh Chamkila' also stars Diljit Dosanjh
But once he was run out in the fourth ball of the final over, it was Sri Lankan Malinga who showed his class to snatch the crown from the defending champions.
Mumbai's best bowler Jasprit Bumrah (2/14) then bowled a brilliant penultimate over, sending Bravo (15) back in the hut after the latter gave Quinton de a simple catch behind the stumps. However, de Kock missed an easy gathering to gift Chennai four byes in the last ball of the over.
Earlier, Faf du Plessis (26) and Watson gave Chennai a steady start before Krunal got the former stumped by de Kock by luring him to come down the wicket.
With du Plessis gone for 26 off 13, Watson and Suresh Raina (8) shared a 37-run stand for the second wicket as Chennai looked to be cruising.
Rohit then gave the ball to Rahul Chahar (1/14) who started Chennai's downfall by trapping Raina (8) in front. Ambati Rayudu (1) could not add much to the tally, getting caught behind off Bumrah.
The game-changing moment came in the 13th over when M.S. Dhoni (2) was caught short of the crease by Ishan Kishan, with replays showing it to be a close call.
But Pollard hogged the limelight for the wrong reasons in the last over when as a mark of protest against the umpire not calling a wide in the previous delivery, he walked across -- even leaving the pitch -- to face the fourth ball before Dwayne Bravo pulled out.
Opting to bat, Mumbai were off to a flying start riding on de Kock's power hitting. The South African stumper-batsman took on in-form Deepak Chahar in the third over, smashing three sixes to take 20 runs off it.
de Kock looked to be in the mood as he slapped Shardul for a six in the fifth over. But the pacer had his revenge in the next ball when he cramped de Kock for room with a quick delivery that the batsman lobbed to Dhoni who took an easy catch. de Kock clobbered four sixes en route his 17-ball 29.
In the next over, Dhoni became the wicket-keeper with most dismissals in IPL history when he dived forward to take Rohit's catch off Deepak Chahar who outfoxed the Mumbai captain with a knuckleball. Rohit's patchy form in the IPL continued as he could only manage 15 off 14 balls, hitting one four and a six.Thrilling win
Mumbai Indians
Q de Kock c Dhoni b Thakur 29
R Sharma c Dhoni b Chahar 15
S Yadav b Imran Tahir 15
I Kishan c Raina b I Tahir 23
K Pandya c & b Thakur 7
K Pollard not out 41
H Pandya lbw b Chahar 16
R Chahar c du Plessis b Chahar 0
M McClenaghan run out 0
J Bumrah not out 0
Extras (w3) 3
Total (eight wkts, 20 overs) 149
Fall: 1-45, 2-45, 3-82, 4-89, 5-101, 6-140, 7-140, 8-141
Bowling: DL Chahar 4-1-26-3; SN Thakur 4-0-37-2; Harbhajan Singh 4-0-27-0; DJ Bravo 3-0-24-0; Imran Tahir 3-0-23-2; RA Jadeja 2-0-12-0.
Chennai Super Kings
F du Plessis st de Kock b K Pandya 26
S Watson run out (Pandya/de Kock) 80
S Raina lbw b Chahar 8
A Rayudu c de Kock b Bumrah 1
M Dhoni run out (I Kishan) 2
D Bravo c de Kock b Bumrah 15
R Jadeja not out 5
S Thakur lbw b Malinga 2
Extras (b 5, w 4) 9
Total (7 wkts, 20 overs) 148
Fall: 1-33, 2-70, 3-73, 4-82, 5-133, 6-146, 7-148
Bowling: M McClenaghan 4-0-24-0; K Pandya 3-0-39-1; S Malinga 4-0-49-1; J Bumrah 4-0-14-2; R Chahar 4-0-14-1; H Pandya 1-0-3-0
'Amar Singh Chamkila' also stars Diljit Dosanjh
British-Indian actor Dev Patel shares the list with the Bollywood diva
Barya and Noor TV channels have been suspended for failing to abide by journalistic principles, says ministry spokesman
The first vote in the seven-phase election will be cast on Friday, with results set for June 4
The 2014-romantic drama is based on Chetan Bhagat's 2009 novel '2 States: The Story of My Marriage'
The Hollywood star confirmed the pregnancy during the premiere of his latest movie
Jennifer Lawrence is potentially set to portray Sinatra's second wife in the biopic
, along with another explorer, had undertaken a historic global trip on a solar-powered flight to land at Abu Dhabi’s Al Bateen Executive Airport in 2016