Learn how the new substitute who can bat and bowl works in IPL 2023. Find out when and how a team can use their Impact Player , and what are the restrictions on overseas players. The Impact Player Rule was introduced in the IPL in 2023. It allows one substitute player per team to play an active part in matches. Know how it works. The IPL 2023 season would see the ' Impact Player ' rule being implemented during matches for the first time. The Impact Player rule continues in IPL 2025 with fresh updates — discover how it works, key regulations, and why it’s changing team strategies and match outcomes in the world’s biggest T20 league.