The Impact Player Rule in Cricket, Explained

For most of cricket’s history, the eleven players who started a match were the eleven who finished it, and a substitute could only field. The Impact Player rule broke that convention in T20, letting teams change their line-up mid-game. Since the IPL adopted it, it has reshaped how sides pick and use their squads.

What the rule allows

The Impact Player is a substitute who can play a full role. Before the toss, each team names its eleven plus up to four possible substitutes. During the match, a team can bring one of those substitutes on as the Impact Player, and the player they replace takes no further part in the game.

The crucial difference from a normal substitute is that the Impact Player can bat, bowl, and field, not just field. That turns the swap into a genuine tactical weapon rather than a like-for-like cover.

When a team can bring one on

The Impact Player can be introduced at set moments in an innings:

At the fall of a wicket
At the end of an over
When a batter retires

Teams have to name the substitution up to a fixed over in the innings, so it cannot be saved indefinitely. Once used, that is the team’s one change for the match.

How teams use it

The rule effectively lets a side play a batter and a bowler in the same slot across the two innings:

Scenario	Common use
Batting first	Bring on an extra batter to boost the total
Bowling second	Swap in an extra bowler to defend it
Chasing	Add batting depth to go after a big target

Because a team can bat deep and still field a full bowling attack, totals in leagues using the rule have tended to climb, and the batting order carries less risk.

The debate

Not everyone is a fan. Critics argue the rule reduces the value of the genuine all-rounder, since a team no longer needs one player who can do both jobs. Supporters say it adds strategy and entertainment, and lets young specialists get game time. As of 2026 it remains a defining feature of IPL-style T20, even as cricket’s authorities continue to weigh its long-term effect on the game.

Frequently asked questions

What is the Impact Player rule in cricket?+

The Impact Player rule lets a T20 team bring on one substitute during a match to replace a player, who then takes no further part. Unlike a normal substitute, the Impact Player can bat, bowl, or field a full role. It was introduced in the Indian Premier League from the 2023 season.

When can a team use its Impact Player?+

A team names up to four substitutes before the toss and can introduce one of them as the Impact Player at the fall of a wicket, at the end of an over, or when a batter retires, up to a set point in the innings.

Can the Impact Player bat and bowl?+

Yes. That is the key difference from an ordinary concussion or fielding substitute. An Impact Player can take on a full playing role, so teams often use one to add an extra batter or an extra bowler depending on the situation.