Sachin Tendulkar said the use of two new balls in One Day Internationals has reduced the effectiveness of reverse swing for bowlers [1].

This shift in dynamics alters the balance between bat and ball in the limited-overs format. By limiting the age of the ball used from each end, the game removes the specific conditions required for bowlers to manipulate the ball's surface and aerodynamics for late-inning breakthroughs.

Tendulkar said the current ODI rules impact the ability of bowlers to generate reverse swing [1]. In the traditional single-ball format, a ball would wear down over the course of 50 overs, allowing a skilled bowler to polish one side and achieve the erratic movement known as reverse swing.

Under the two-ball system, balls are replaced more frequently, meaning they rarely reach the state of wear and tear necessary for this phenomenon to occur [1]. This change effectively strips bowlers of a potent weapon during the final stages of an innings, a period where reverse swing historically allowed bowling teams to stifle scoring and take wickets.

The lack of a seasoned ball means that the advantage remains more heavily with the batter throughout the match [1]. While the two-ball rule was intended to keep the ball harder and more appealing for the fielders, it has fundamentally changed the tactical approach for fast bowlers who rely on the ball's degradation to deceive the opponent [1].

The use of two new balls in One Day Internationals has reduced the effectiveness of reverse swing.

The observation by Tendulkar highlights a systemic shift in ODI cricket where regulatory changes intended to maintain ball quality have inadvertently neutralized a core skill of fast bowling. This trend continues the broader movement toward higher-scoring matches and batter-friendly conditions in the white-ball game.