The 15-Second Clock: How DRS Reviews Are Initiated and Managed
The exact procedure for initiating a DRS review — the 15-second window, who can call for a review (captain only, or can fielders trigger it), what happens if the review is called outside the window, the 'player review' vs. 'umpire referral' distinction, what the third umpire examines in each type of review, and how the review counter is managed across an innings.
The 15-Second Window
A DRS review must be initiated within 15 seconds of the on-field umpire making their decision. The 15-second window begins at the moment the umpire signals their decision (raising a finger for out, or shaking their head for not out). If the review is not requested within 15 seconds, the on-field decision stands and cannot be reviewed — even if the decision is clearly incorrect. The 15-second rule prevents teams from delaying review decisions until they have consulted additional footage or gathered information — the review must be a genuine real-time judgment by the players based on what they observed.
Practically, the 15-second window creates high-pressure decision-making in the field. A captain watching from slip or mid-on must decide quickly whether to challenge — with limited information (their own observation, sometimes a signal from a teammate closer to the action). DRS review decisions are a genuine skill: captains who review too frequently exhaust their allocation on marginal decisions; those who review too sparingly miss legitimate overturns. The best DRS decision-makers develop an instinct for when the technology is likely to overturn a decision vs. when the on-field umpire's call is likely to be confirmed.
Who Can Initiate a Review
Under ICC playing conditions, a review is initiated by the batting captain (or designated decision-maker in the batting team, typically the captain or a senior player in an advisory role) on behalf of the batting team, or by the fielding captain on behalf of the fielding team. The ICC's rules specify that the captain makes the final call — however, in practice, fielders near the action routinely communicate their view to the captain, and some teams have specific signals (head shakes, arm movements) to indicate whether a review is worthwhile. In women's international cricket and some other ICC events, the on-field umpire may also refer decisions upward to the third umpire (the 'umpire referral'), which is a different pathway from the 'player review.'
Umpire Referral vs. Player Review
The 'umpire referral' — where an on-field umpire proactively refers a decision to the third umpire without either team requesting it — is distinct from a player-initiated DRS review. Umpire referrals are most commonly used for: boundary decisions (whether a ball reached the boundary or was stopped by a fielder); run-out and stumping decisions in the field (whether the wicket was broken before the batsman grounded their bat); and 'soft signal' decisions (where the on-field umpire signals tentatively 'out' or 'not out' but refers the decision for technology confirmation). An umpire referral does not consume either team's review allocation — it is an independent decision-making process separate from the player DRS system.
Frequently asked questions
What happens if both teams want to review the same decision?
Only one review per decision is permitted. If the batting team successfully overturns an 'out' decision through a review, the fielding team cannot then initiate a counter-review on the same ball. Reviews are one-directional: either the batting team challenges an 'out' decision, or the fielding team challenges a 'not out' decision, but not both. In the very rare scenario where both teams simultaneously signal reviews (which would indicate poor communication), the umpires would clarify who has initiated the review. In practice, this scenario does not arise because the 15-second window creates a clear sequence — one team initiates or the other, not both simultaneously.
Can a non-striker initiate a review if the striker is out?
No — the review is the batting team's collective decision, coordinated through the captain or designated decision-maker. The dismissed batsman has already been given out and must wait at the crease or walk off depending on the convention. The non-striker (the batsman at the bowler's end) can advocate for a review and the players can communicate, but the formal review is initiated by whoever the team designates as the review decision-maker. In practice, if the dismissed batsman believes the decision is wrong, they immediately communicate this to their partner who can then ensure the captain is informed within the 15-second window.
Do review allocations carry over between innings?
No — DRS review allocations reset at the start of each new innings. A team that uses both their reviews in the first innings begins the second innings with a fresh allocation of 2 (Tests/ODIs) or 1 (T20Is). This means the strategic value of 'saving' a review for later in an innings is real within that innings, but there is no benefit to ending an innings with reviews unused — they do not accumulate for future innings.