Needing six to take the game into Super Over, Lasith Malinga's final delivery to Shivam Dube was a no-ball that was missed by the on-field umpires as RCB managed 181 for 5 in reply to 187 for 8 by Mumbai Indians.
What hurts them more was AB de Villiers, who nearly took his team to the victory with an unbeaten 70 off 41 balls would have faced the free-hit. Both umpires C Nandan and ICC Elite Panel's S Ravi bungled completely leaving Virat Kohli seething in anger.
But nothing can be taken away from fit-again Bumrah's mastery at the death as he singlehandedly won it for MI with superb 17th and 19th overs.
During the chase, Kohli signalled his intentions at the beginning itself hitting Jasprit Bumrah for three consecutive boundaries in one over. Hardik Pandya was slashed through the point and cover driven for successive boundaries.
Mayank Markande, who dismissed Parthiv Patel (31 off 22 balls) with a googly was hit for a straight boundary by Kohli. On the day, Kohli became the second man after Suresh Raina to complete 5000 runs in Indian Premier League.
De Villiers, who got a reprieve when Yuvraj Singh failed to anticipate a sharp chance in the slip cordon, got his act together and dispatched Markande into the stands. De Villiers then got his second six off Lasith Malinga to finally get into the groove.
With the partnership one short of the 50-run mark, Bumrah came back for his second spell and bowled a sharp bouncer and the RCB skipper couldn't maintain his balance trying to execute a pull-shot as Hardik Pandya completed the formalities.
However, De Villiers, who was set by then was in a mood to take Malinga to the cleaners. A shadow of his old self, Malinga was missing length most of the times and two huge sixes in the 16th over of the Lankan slinger saw De Villiers get the equation down to 41 off 24 balls.
But Bumrah kept MI in the match giving away only one run in the 17th over as 40 was required off the last three overs.