After bagging five wins out of first six games, they managed to clinch just one from the rest six matches.
While Krunal took Aussie Marcus Stoinis to the cleaners twice before striking a boundary off consecutive deliveries, Pollard deposited left-arm spinner Axar Patel for a massive six before belting Rajpoot for two fours and a six.
The Karnataka batsman shared a 111-run second wicket partnership with Aaron Finch (46) to take Punjab to the brink of a successful run chase but Bumrah scalped three wickets in his second spell to derail the chase.
Mumbai Indians will host the Kings XI Punjab in their final at their home ground, Wankhede Stadium, Mumbai. The two teams have previously met in this year's IPL, with Mumbai beating Punjab on that occasion in Indore.
Rahul and Finch took Mayank Markande's third over, the 16th of the innings, for 18 runs.
Even though Evin Lewis was bowled for 9, Suryakumar Yadav and Ishan Kishan's attacking intent ensured the run rate didn't slip. And when Rohit Sharma's mistimed pull found mid-on, Mumbai were caught in an awkward position at 71 for 4 in the ninth over. He gets to the milestone in just 22 balls as Mi go past 150. KXIP, who largely used Andrew Tye in the second half of the innings, in a surprising move, got him to bowl two of the powerplay overs.
However, for the must-win encounter against Kings XI, Pollard was brought back in place of JP Duminy.
Two changes for us, Yuvraj Singh and Manoj Tiwary are back, they replace Mayank Agarwal and Karun Nair.
Barring his match-winning knock against Royal Challengers Bangalore, Rohit has failed to live up to the expectations this season. Yadav (27 off 15) fell the very next ball and Mumbai, with 60 for 3 in six overs, had mixed feelings about the Power Play. However, if they lost the match, they will be out of contention in the knockout stage.
After losing Chris Gayle (18) early on, Rahul and Aaron Finch (46) added 111 for the second wicket to put the visitors on course but Jasprit Bumrah broke the unsafe stand with the Australian's wicket in the 17th over. And just when they seemed to have finally built some momentum in their campaign with three successive wins, they ran into a red-hot Jos Buttler at the Wankhede on Sunday.