https://matteocampagna.com/en/registry/competition/the-ten-is-not-guaranteed Changes to this claim in Matteo Campagna's evidence registry: its status, its year-by-year history, revisions of the page. en-gb https://matteocampagna.com/en/registry/competition/the-ten-is-not-guaranteedThree independent counts, two of them very large, say the same thing from different angles. In Chinese professional competitions one arrow in five lands in the ten, 20.7 per cent, and the mean score per arrow is 7.91. In international head-to-head matches, across 6,374 three-arrow series, only in thirteen per cent of cases are the first two arrows both tens, while in almost half they are both outside, and the last arrow of the series is worth 8.25 on average. In eight high-level French archers, 549 arrows at seventy metres, tens make up 30.2 per cent and arrows of eight or less 29.7. The share of tens varies a great deal from one study to another, and it varies within the same group too, from seven out of seventy-two to thirty-two out of seventy-two. There is a physical reason: indoors and with no wind, at fifty-five metres, the vertical standard deviation of a competitive archer filmed at high speed is just over ten centimetres, and the ten at seventy metres is a circle of 12.2 centimetres, so the group is already as wide as the ring it is trying to hit. The ten, at any level, cannot be repeated at will.claim:dieci-non-garantito:revision:2026-10-03:2Sat, 03 Oct 2026 08:00:00 GMT https://matteocampagna.com/en/registry/competition/the-ten-is-not-guaranteedclaim:dieci-non-garantito:new_claim:2026-08-19:corroboratoWed, 19 Aug 2026 08:00:00 GMT