The evolution of maximum breaks in professional snooker

Abstract

Abstract The maximum 147 break is snooker’s most celebrated achievement, yet its frequency has never been analysed statistically. We compile a season-level dataset of 44 seasons (1981–82 to 2024–25) and 217 maximum breaks. Using negative binomial regression with a log-frames offset, we find the 147 rate rising exponentially at 6.8 % per season (IRR = 1.068, 95 % CI 1.052–1.083). This outpaces the century rate (4.8 % per season), so the extreme tail of the break distribution is fattening. Because every 147 is also a century, we decompose the trend into three stages: the 147 rate, the century rate, and the conditional probability that a century reaches 147, rather than a single collinear model. All three rise; the conditional probability increases about 1.3 % per season, though only marginally significantly. Financial incentives, which ranged from £0 to £147,000, show no significant association in any specification (all p > 0.5). The mean age of 147-makers has risen 3.1 years per decade ( p < 0.001) as the age distribution widens, and the number of unique makers per ten-season window has increased more than fivefold (8–45). Maximum breaks are becoming more common as break-building skill improves, not as a response to incentives or expanding opportunity.