Various
1 January 2017
The 'Umpire's Call' element of DRS, where marginal LBW decisions are upheld even when ball-tracking shows the ball hitting the stumps, has been one of cricket's most divisive ongoing controversies.
England vs Australia
July-August 2013
The Hot Spot infrared technology was shown to be unreliable during the 2013 Ashes, failing to detect clear edges and undermining confidence in DRS.
India vs Various / ICC Governance
24 November 2008
India refused to use the Decision Review System for nearly eight years after its introduction, citing concerns about the technology's reliability, while critics accused the BCCI of blocking progress.