The Pink Ball: Why Day-Night Tests Use a Different Cricket Ball
The physics and practical differences of the pink cricket ball used in day-night Tests — why white and red balls are unsuitable for floodlit play, how the pink ball's manufacturing differs, its swing characteristics, seam hardness and durability differences compared to the red ball, and why spinners tend to struggle with the pink ball.
Why a New Ball Colour Was Needed
Test cricket used the red ball exclusively for most of its history. The red ball is visible against white clothing and blue sky in daylight — the traditional playing conditions of a 10:00am-6:00pm Test day. When day-night Tests were introduced (first played in 2015 between Australia and New Zealand at Adelaide), the traditional red ball presented a visibility problem: under floodlights, the red ball's low contrast against the dark evening sky made it difficult for batsmen and fielders to track the ball's flight path, particularly at dusk during the 'twilight period' when natural light is fading but artificial light has not yet fully compensated.
The white ball (used in ODI and T20 cricket since the 1970s) was already proven in artificial light — white ball's high contrast against dark backgrounds makes it visible under floodlights. However, white balls deteriorate much faster than red balls (requiring multiple ball changes per innings in ODIs) and do not produce the extended swing swing behaviour that gives Test cricket its particular tactical dimension. A Test-quality white ball that maintained its hardness for 80 overs under floodlights would effectively be a modified ball — hence the development of the pink ball as a compromise.
Pink Ball Manufacturing
The pink ball is manufactured by the same methods as the red ball — hand-stitched leather quarters around a cork-and-twine core — but with a different dye and lacquer applied to achieve the pink colour and its visibility under artificial light. The lacquer on the pink ball is harder and more consistent than the red ball's dye, producing a ball that stays harder for longer and retains its shape more predictably. The pink ball's seam is typically slightly more pronounced (tighter stitching, more distinct ridge) than the red ball, which affects the amount of seam movement generated when the ball lands on the seam.
Kookaburra manufactures the pink ball used in most day-night Tests (Dukes also produces a pink ball for England home day-night Tests). The Kookaburra pink ball swings significantly in the early overs — more than the red ball under equivalent conditions — which has made early wickets more common in day-night Tests than in equivalent daylight Tests. The combination of floodlit dew (condensation that wets the ball's surface in the evening session, affecting grip and swing) and the pink ball's seam characteristics creates a distinct challenge in the twilight/evening session.
Spinners and the Pink Ball
Spin bowlers consistently report more difficulty generating purchase (grip on the ball to impart spin) with the pink ball compared to the red ball. The harder lacquer on the pink ball's surface makes it more difficult for the spinning finger to grip the seam, and the ball's tendency to stay harder for longer (rather than softening as the red ball does after 30-40 overs) means the spin bowler's contact with the seam does not improve as the innings progresses. This has led to day-night Tests being more heavily dominated by pace bowling than equivalent red-ball Tests, with spinners playing a reduced tactical role.
Frequently asked questions
Why is the pink ball used only in Tests and not in day-night ODIs?
Day-night ODIs use the white ball (which has been standard in all limited-overs cricket under floodlights since the 1970s). The pink ball was developed specifically for the Test format — it aims to replicate the red ball's Test-cricket swing and seam characteristics while being visible under floodlights. There is no need for a pink ball in ODIs because white balls are already used there under artificial light, and the two-ball system in ODIs (one from each end) prevents the excessive wear that would make a single white ball unusable across 50 overs.
Has any country refused to play day-night Tests?
India was notably reluctant to play day-night Tests for several years, primarily due to concerns about dew on subcontinental grounds (which heavily affects the pink ball's grip and swing) and broadcasting considerations (a floodlit evening Test in India corresponds to late-morning/midday viewing in Australia and England — less attractive prime-time TV for the key markets). India eventually played their first day-night Test against Bangladesh in Kolkata in November 2019. India has since played several day-night Tests but remains selective about when and where they host them.
Do day-night Tests always go to 5 days, or do they finish faster?
Data from early day-night Tests suggested they finished faster on average than daylight Tests — potentially because the pink ball's harder lacquer and more pronounced swing produced more wickets in the early sessions. However, as teams adapted their playing approaches to day-night conditions (batting more defensively in the twilight period, being less aggressive in the morning session when the ball is new and conditions challenging), match durations have trended back toward the typical Test match average of 3-4 days for a decisive result.