A patient 46 from Chris Gayle was the catalyst for Bangalore's thrilling five wicket success over Chennai with just a ball to spare.
Skipper Virat Kohli gave Gayle great support, the pair sharing in a 61-run partnership before Kohli was undone by the spin of Jadeja, while AB de Villiers smashed 28 off just 14 balls to help see his team home.
The win gives the Royal Challengers some hope of making the latter stages of the tournament and, while it is a setback for the home side, they are still expected to progress.
The Super Kings made two changes to their batting. Faf du Plessi was replaced by David Hussey, while Mithun Manhas came in for Vijay Shankar.
Kohli admitted that Bangalore also wanted to bat first and brought in fast bowler Varun Aaron for batsman Vijay Zol.
Brendon McCullum's opening salvo was a magnificent six off Muttiah Muralitharan and then a top edge for a maximum off Aaron. Eventually he was well caught in the deep by Mitchell Starc off Aaron, when trying to clear the ropes for a third time.
The threat of Dwayne Smith ended two balls later, the West Indian being another victim of Aaron, who had him easily caught at cover when he spliced one to de Villiers.
Suresh Raina and David Hussey, the latter having been recalled from the commentary box to the Bangalore line-up, tried to counter the bowling side, but had to settle for consolidation. Both Abu Nechim and Yuzvendra Chahal kept them quiet with some excellent bowling, conceding only three boundaries in six overs around the middle of the innings.
The return of both Aaron and Murali to the Super Kings' attack proved more productive for the home side, with Raina picking up three boundaries and Hussey a superb straight six off Chahal as they began to wind up the pace.
Hussey had moved on to 25 before he tried to pull Murali over the mid-wicket boundary, but instead found Starc in the deep, who took the catch. The 75-run partnership reinvigorated Chennai, for whom Raina passed 50 off just 35 balls, going on to remain unbeaten on 62 as his team closed on 138-4.
It was the seventh over of the Royal Challengers' innings before Gayle was able to open his shoulders, smashing Badree over mid-wicket for six, but with little over one-a-ball needed there was never any cause for panic from the visitors.
Needing 10 to win off the last over, Yuvraj hammered off-spinner Hussey for six off the first ball and despite the dismissal of Rana, Nechim hit the Aussie over the top for four to win it off the penultimate scheduled delivery.