ICC revamps T20I rules with key changes to powerplays, concussion replacements, and ball condition

The International Cricket Council (ICC) has introduced new playing conditions for men’s T20 Internationals, with the key change focusing on how powerplay overs are calculated in reduced-overs matches. These updates will come into effect on July 10, 2025.

Until now, in shortened games, the number of powerplay overs was rounded off to the nearest full over, often causing an imbalance in fielding restrictions. The ICC has now decided to round powerplays to the nearest ball, to ensure that they reflect approximately 30% of the innings, as intended in a standard 20-over match.

For example, in a 5-over innings, the powerplay will now last 1.3 overs (1 over and 3 balls). In a 10-over match, it will be 3 overs, and for a 17-over match, it will be 5.1 overs. Previously, these would be rounded to full overs, such as 2 or 3, leading to inconsistency.

The ICC cited the T20 Blast in England, where similar rules have been used successfully for years. Players and officials have adapted well to powerplays ending mid-over.

In practical terms, umpires will signal the end of the powerplay during the over, and fielding teams will be allowed to adjust accordingly. For example, in an 8-over match, the signal will come two balls into the third over, allowing extra fielders to move outside the circle.

Another important update is related to concussion substitutes. Teams will now be required to name five specific concussion replacement options — one batter, one wicketkeeper, one all-rounder, one spin bowler, and one pace bowler — before the start of each T20I match. This rule aims to ensure fairness and transparency, especially in overseas conditions where squad sizes are limited.

In cases where associate nations face difficulties naming five specific replacements, some flexibility will be allowed. For example, if a batter is nominated as a backup wicketkeeper, the referee may require him to keep wickets if substituted in that role, or may allow another player to do so — but only at the referee’s discretion.

The ICC has also reinforced the rule regarding ball condition. If a team is found to have deliberately applied saliva or any external substance to alter the ball’s condition, the ball will be immediately replaced, and action may follow under the Code of Conduct.

These changes apply only to men’s T20Is for now. The ICC said a revised set of conditions for women’s T20Is will be released in October 2025.

These updates aim to make the shortest format of the game fairer and more consistent, especially in rain-affected matches and with squad regulations.