Third Umpire and Technology: How Reviews Changed Cricket
From simple run-out checks to full DRS systems, the third umpire and technology have fundamentally changed how cricket is officiated in the modern era.
Cricket introduced the third umpire in 1992 for run-out decisions, using television replays. Three decades later, technology covers almost every contentious decision in the game.
The Rise of DRS
The Decision Review System (DRS) was introduced for Test cricket in 2009 and became mandatory at ICC events from 2017. It allows teams to challenge on-field decisions using a combination of technologies.
Each team receives two reviews per innings in Tests, one in ODIs. A review is retained if the on-field decision is overturned and lost if the original decision stands.
Technologies in Use
- Hawk-Eye: Ball-tracking that predicts trajectory for LBW decisions
- Ultra-Edge (Snickometer): Audio-visual technology that detects bat-ball contact
- Hot Spot: Infrared imaging showing heat from friction at contact points
- Real-Time Snicko: Audio waveform analysis for edge detection
- Stump microphones: Audio feeds helping detect bat-pad or bat-ball sounds
Controversies
DRS has not eliminated controversy. Hawk-Eye's "impact zone" and predictive element remains contentious. Teams without DRS infrastructure in lower-tier matches face fewer protections.
India initially refused DRS, citing technology reliability. They adopted it fully only from 2016, having previously blocked its use in bilateral series against them.
Frequently asked questions
Can the third umpire initiate a review?
In Test cricket the third umpire can only be referred to by on-field umpires, not players. Players use the DRS challenge system instead. However, the third umpire checks all boundary decisions independently.
Are all matches DRS-enabled?
No. DRS requires significant equipment and costs. Major international matches at ICC events and top bilateral series use it, but domestic cricket in most countries does not.