So, the Roller Derby World Cup happened from 3-6 July in Innsbruck, Austria. Our hosts Fearless Bruisers Innsbruck were extremely hard working, and from the 1st to the 7th (including set up + teardown time) we worked with 6 THOs, 2 THAs, 2 THPs and three GTOs (and 9 officiating crews, dozens of announcers and photographers, and a host of volunteers, along with our streaming tech friends at Real-Time Events) to make the world's largest Roller Derby event in history happen.
Despite this record-breaking scale over 5 tracks and 80 games, each of our 48 teams only played 3⅓ games on average. In order to make it possible to effectively run the equivalent of a qualifier, "group stage" and elimination all in just 4 days - with 6 teams entirely new to Derby! - we needed to use a tiny bit of statistics.
The advantage of the stats is that we can present you with a considerably richer "final result" than most sporting events would - estimating not just final ratings but also our errors on those ratings.
Code for this graph is open to the public at https://codeberg.org/aoanla/RDWC2025 (the game data needed will be uploaded very soon).