DRS in Cricket

Decision Review System — technology-aided review that teams can use to challenge on-field decisions.

What is a DRS?

Teams have a limited number of reviews per innings (usually 2 in Tests, 1 in ODIs). They can challenge LBW decisions using ball-tracking (Hawk-Eye), edges using Snickometer or Ultra-Edge, and whether catches were clean. If the review succeeds (decision overturned), the team retains the review. If it fails, they lose one review. DRS has eliminated many howler decisions but also created new debates about accuracy margins and tracking technology limitations.

In play

Batter given out LBW. Reviews it. Ball-tracking shows the delivery pitched outside leg stump — not out, LBW cannot be given. Decision overturned. Team retains their review. Batter survives.

More laws terms

• No BallAn illegal delivery — the bowling side is penalised with an extra run and a free hit in limited overs.
• WideA delivery bowled too far from the batter — adds a penalty run and must be rebowled.
• Free HitA penalty delivery after a front-foot no ball where the batter cannot be out (except run-out).
• PowerplayOvers with fielding restrictions — limited fielders outside the 30-yard circle.
• Follow-onWhen the team batting first forces the opposition to bat again immediately after their first innings.
• Dead BallA delivery where play is temporarily suspended and no runs or wickets count.