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I understand that ball-tracking is used in cricket DRS to review lbw decisions, but the “Umpire’s Call” result still confuses me. Sometimes the review shows the ball clipping the stumps and the original decision stands, while another review can overturn a call.
What is the rule trying to account for when ball-tracking is close to the edge of the wicket? I’d appreciate a plain explanation of how the margin works and why the on-field decision matters in that situation.
