Runs scored in World Baseball Classic

The Spring 2026 Metaculus Cup question on total runs scored in the World Baseball Classic knockout stage resolved at 59 runs, closely matching one forecaster's 60-run prediction while the community mean sat just under 70 with a 60–80 spread. The forecaster built a baseline from prior tournaments—33 runs in 2009, 12 in 2013, 18 in 2017 and 76 in 2023—noting that pre-2023 totals excluded quarterfinals, and derived a per-game average of 8.7 runs across 16 games, projecting roughly 61 runs over the seven scheduled 2026 games. Adjusting for uncertainty in the small sample of only four tournament totals, the initial 43–79 range widened to 35–87 runs at 90% confidence. Drilling into game- and team-level data revealed a mean of 4.3 runs against a variance of 10, more than double what a Poisson process would imply, indicating the counts are overdispersed rather than random. The exercise matters as a demonstration that granular count modeling can sharpen forecasts for any event involving tallies, not just sports, and the next step would be applying overdispersed count models to tighten such ranges.