How a Single Rule Change is Shaping One-Day International Cricket

A Shift in ODI Cricket

England recently faced Sri Lanka in a one-day international at Headingley, and after the loss, coach Brendon McCullum addressed his team, noting how the game's dynamics have shifted. The key factor? The ball itself.

McCullum was pointing to reverse swing—the phenomenon where an older ball moves unpredictably in the air, opposite to what batters expect.

What Has Changed?

In July 2025, a new rule allowed captains to pick which of the two white balls used during an innings they want to keep after 34 overs. This means that one ball can be used for the remainder of the innings, growing older and rougher, enabling more reverse swing.

This alteration has sparked a revival of reverse swing in ODIs, influencing how matches unfold and opening up fresh strategies less than a year ahead of the next World Cup.

Examples from Recent Matches

Take Sam Curran's performance against India at Lord's in July: he swung the old white ball more than twice as much in the final spell compared to earlier. Contrast that with Saqib Mahmood a year before, who saw less than half the swing at the death compared to the start.

These snapshots reflect a global trend since the rule change aimed to assist bowlers.

Statistical Impact

• Percentage of deliveries with more than 1 degree swing in last 10 overs: increased from 35% to 50%
• Economy rates of pace bowlers in final 5 overs: dropped from 8.40 to 7.95 runs per over
• Pace bowlers’ average runs per wicket: fell from 19.2 to 18.3

These numbers suggest hitting boundaries late in the innings has become trickier.

England Leading the Trend

Teams are adapting, bowling fuller and using inswingers more often now that reverse swing is stronger. For instance, Sri Lanka bowled 69% of their deliveries six metres or closer to the stumps in their recent win over England, helping secure a 16-run victory.

Despite that, England appear to have benefited the most, though their overall ODI improvement this year also factors in. Since July 2025:

• Bowling average at death: dropped from 36.76 to 20.91
• Economy rate at death: down from 9.78 to 7.53
• Batting run rate: risen from 8.07 to 9.16

After losing at Leeds, McCullum urged his players to rethink tactics considering these changes. Just three days later, England surged from 104-2 to 214-2 in the 10 overs before Sri Lanka chose their preferred ball.

Other Teams and Players

Several nations including Australia, New Zealand, West Indies, South Africa, Bangladesh, Pakistan, and Afghanistan have seen slower scoring during death overs post-rule change. The West Indies' death run-rate dropped by 2.39 runs per over.

Individual bowlers have found more swing late in innings too:

• Alzarri Joseph (West Indies): swing increased by 84%, bowling average dropped from 24.1 to 17.4
• Lungi Ngidi (South Africa): swing rose 63.3%, average reduced to 13, economy fell from 9.34 to 6
• Nathan Smith (New Zealand), Naseem Shah (Pakistan), Mustafizur Rahman (Bangladesh): all gained late movement with varying effects

Shaheen Afridi, Pakistan’s captain in the tri-series, remains one of the best at finding swing at the death, averaging 1.3 degrees since the change (up slightly from 1.2). A showdown featuring him and Naseem Shah against England could be fascinating.

Jofra Archer leads England in late movement, averaging 0.97 degrees—an increase of 37%.

Looking Ahead to the World Cup

Reverse swing hasn’t affected all locations equally. England has seen a 63% rise in swing late in innings, while Bangladesh shows a 33% jump. Matches in Sri Lanka, Bangladesh, and Pakistan also exhibit more late movement, relevant for upcoming fixtures.

Australia and South Africa show less impact so far. With only three ODIs played in South Africa since the rule took effect, predicting outcomes there is tough. South African matches typically feature decent late movement but also higher scoring rates around 7.35 runs per over.

If reverse swing increases in these regions, teams might need to adjust by scoring faster earlier in their innings.

All statistics reflect data prior to the ODI tri-series involving Pakistan, Sri Lanka, and England.