Paceman Jasprit Bumrah said constantly practising his yorker was helping him perfect the art after he finished off Bangladesh to earn India a World Cup semi-final spot.

from Times of India https://timesofindia.indiatimes.com/sports/cricket/icc-world-cup/world-cup-2019-indias-yorker-specialist-jasprit-bumrah-reaps-benefits-of-net-practice/articleshow/70050177.cms