The turning point of the game was when Ashwin gave the ball to Barinder Sran to bowl the penultimate over of the innings. But with five required off the final delivery, he failed to clear long off and was left crestfallen as Kings XI managed to sneak through.
Kings XI jumped to the top of the table with this win and have 10 points from 6 games while Delhi continue to languish at the bottom with just one win.
To start with, they lost to Kings XI Punjab in their away game, were then subjected to a humiliating defeat by Kolkata Knight Riders, emerged second best against Rajasthan Royals under the Duckworth/Lewis method and faced another reverse at the Chinnaswamy Stadium.
In the first innings, Australian batsman Aaron Finch (2) was the first wicket to fall for Punjab, off the bowling of Avesh Khan, before fellow opener Lokesh Rahul (23) followed in the fifth over, becoming the first of England bowler Liam Plunkett's three wickets. The rampaging Chris Gayle was forced to sit out the game due to a sore back and his absence was certainly felt by Kings XI. Aaron Finch was bumped to the top and was undone by the raw pace of Avesh: a 148.7kph lifter forced him to splice a catch to cover.
Although Iyer clobbered a four and six off the last over off Mujeeb Ur Rahman, he was holed out off the last ball in the deep as Delhi fell short of the target by 5 runs. He swiftly swivelled on the back foot and hooked a flat six over fine leg.
The task is certainly going to be hard when up against Gayle and Co, with the Jamaican forming a deadly opening combination with K L Rahul.More news: Giants-Belt-Long Plate Appearance
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Here, we look at why Kings XI should be optimistic about their chances. But they then struggled to maintain the momentum after Plunkett uprooted Mayank Agarwal's stumps for 21.
Going 31 balls without a boundary is just inexcusable in T20s, especially after a rickety start.
Rahul Tewatia (24) did provide some resistance from the Delhi lower-order. So, Nair chose to make up for it against pace.
Plunkett was once again involved in another crucial dismissal.
Earlier Delhi Daredevils will be able to stop the Kings XI Punjab on 143 runs with their brilliant bowling performance. Rohit Sharma's unit has lost four out five games in last overs and they're in desperate need of some good luck. Among batsmen who have faced 40 balls or more, he has the highest dot-ball percentage (58.92%) and the worst strike rate (89.28). Aaron Finch's awful run in this season continued.
Ankit Rajpoot showed his real worth on Monday as he helped his team to a four-run victory over the Delhi Daredevils with a fiery spell of 2/23 in his four overs.