Sunrisers' win probability, according to ESPNcricinfo, was 0.35% when their No. 6 Abdul Samad fell off the penultimate delivery of the 17th over. Then with five balls to go, they were 97.2% favourites at Eden Gardens. But Harshit held his nerve to dismiss both Shahbaz and Klaasen and deliver a win in front of a delirious home crowd.

"But I had that belief in him. I knew that something [good] would happen."

Harshit, understandably, went into that last over with butterflies in his stomach, and at that point Iyer told him to just back himself. "This is the time where he could become a hero. That's what I told him. 'Back yourself. No matter what happens in this situation, we're going to back you'.

"To be honest, Harshit was a bit nervous when he was coming to bowl [the 20th over]. I looked into his eyes and I told him 'this is your moment, buddy. You need to make the best use of it and don't think much about it'.

"I told him 'Even if we lose, it's fine. You just back yourself and you see to it that you execute whatever I say and what messages we got from inside'. It was a big cluster [of players] in between, but I tried to calm him down as much as possible and then the rest is history."

"I think his body language was on point in the last over; he wanted the ball," Russell said. "That is the body language we all need as professionals. If he was shying away from it, it could have gone their way.

"He told me that he wanted the last over. So he claimed it and he did deliver for us. With the first ball gone for six, still there was some doubt there, but you know he came back strong and he got the job done."

Harshit finished the game with career-best T20 figures of 3 for 33.

With Klaasen clearing the boundary at will against spinners and fast bowlers alike, the KKR dressing sent out a clear message - take the pace off the ball.

And it worked to perfection, with Harshit outdoing Klaasen with a slower ball in a key moment, when Sunrisers needed five runs off two balls.