Jasprit Bumrah said constantly practising his yorker had helped him perfect the art after he ran through Bangladesh’s batting to earn a semi-final spot for his side.
Bumrah returned with figures of 4-55 in his 10 overs at Edgbaston as Bangladesh were knocked over for 286, falling short by 28 runs at the end.
"Everything is preparation. I do it again and again in the nets. The more you do it the better you get," said Bumrah.
.@Jaspritbumrah93 addressed the media after India's close win over Bangladesh at Edgbaston— Cricingif (@_cricingif) July 3, 2019
"Yorker is just like any other delivery. The more you practice is, the better you execute it," Jasprit Bumrah talks up his special delivery.#BANvIND #CWC19 #TeamIndia #RiseOfTheTigers pic.twitter.com/iS0mdc1EBK
"You can't master it but I'm still trying to get better. It's all about repetition. Do it again and again and try and replicate in the game."
Opener Rohit Sharma smashed his fourth century of the tournament while their bowlers took regular wickets to stay ahead of Bangladesh throughout the game.
Bumrah, who doesn’t use much of his non-bowling arm, has claimed 14 wickets in seven matches at this World Cup and credits his preparation as the main reason behind his success.
"Whenever I practise in the nets, I practise each and every situation. Be it with the new ball, be it with the old ball, bowling at the death," said Bumrah.
"So if I have ticked all the boxes in the nets it's all about execution in the match and keeping it simple. If the work ethic is good, the execution is much easier."
Bumrah, who was a part of Mumbai Indians’ successful campaign in the IPL, said handling crunch situations in the tournament came in handy ahead of the World Cup.
"We played some tough matches in the IPL," said Bumrah. "We played until the end. So good match practice was given to us, very happy with that.”