Yadav yesterday produced a serious spell of fast bowling that saw him snare three wickets in six maiden overs in the final session. He ended with figures of 21-16-9-3.

"Throughout my Test career, I have played a match here or a couple there; never really had a few games at the stretch. But after this spell, my confidence has gone really high. I felt that whatever I have learnt so far, whether while playing Test cricket or going back to domestic cricket, I could make it count in this spell," said Yadav.

What was his mindset going into the final session? "I told myself that this is the last Test match I am going to play for the next six months," he was quoted as saying by bcci.tv.

"And this moment – the chance to beat South Africa 3-0 by winning a Test like this – will never come back again. I knew that one wicket would open things up for us. All I wanted was that one wicket."

Yadav removed Dane Vilas and Kyle Abbott with fast inswingers before getting Dane Piedt caught behind to set up the series-victory at Kotla. "We had a word in the dressing room during the tea break that it won't be a bad idea to bowl with a slingy action, because it would help me swing the ball more," he revealed.

"I tried it and it worked – I got the ball to reverse more than usual because of that action. Also, since it was swinging late, the batsmen were confused whether it would come in or go away."

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