In the cricket match between India and Pakistan that took place in Jaipur on October 2, 1983, a significant new rule was introduced that would go on to become a standard part of limited-overs cricket. This rule was the concept of "fielding restrictions" and specifically introduced what is now commonly known as the "Powerplay."

The introduction of fielding restrictions or the Powerplay aimed to make One-Day International (ODI) cricket more exciting and balanced between bat and ball. Here's how it worked:

1. Limited Fielders Outside the 30-Yard Circle: In the first 15 overs of the innings, there was a restriction on the number of fielders allowed outside the 30-yard circle. Traditionally, fielders could be placed anywhere on the field, but with this rule change, a maximum of four fielders could be stationed outside the circle during the initial 15 overs of the innings.

2. Increased Scoring Opportunities: By limiting the number of fielders in the outfield, batsmen had more opportunities to find gaps and score runs. This made the game more appealing to spectators as it often led to higher-scoring matches.

3. Enhanced Entertainment Value: The Powerplay rule was introduced to inject excitement into the middle overs of ODIs. It encouraged aggressive batting and creative field placements to contain runs, adding a strategic element to the game.

4. Balance Between Bat and Ball: While it favored batsmen during the Powerplay, bowlers had the chance to take wickets and stem the flow of runs. It provided a balance between batting and bowling, contributing to the competitiveness of ODI cricket.

The introduction of the Powerplay rule in the India-Pakistan match in Jaipur on October 2, 1983, was a pivotal moment in the evolution of limited-overs cricket. This rule change not only influenced the way ODIs were played but also paved the way for further innovations in the format, such as the addition of more Powerplays, including the batting and bowling Powerplays introduced later, and the use of two new balls in an ODI innings.

The Powerplay rule remains an integral part of modern limited-overs cricket, adding layers of strategy and excitement to the game, and it all began with that historic match in Jaipur in 1983.