R at Bet Better

Short, runnable R posts about open sports betting data: how much bookmakers keep, how well odds are priced, and how to work with the free files we publish. Every post uses data you can download and re-check yourself.

Posts

• Pull the daily bookmaker margin index into R (28 Sep 2026)
• Turn betting odds into probabilities in R, and see what the bookmaker keeps (28 Sep 2026)
• Draw a calibration curve for betting odds in R (28 Sep 2026)

The package

The betbetter R package wraps the free API (win probabilities, fair odds, predicted scores, power rankings) with no key. A CRAN submission is in review; until it lands, install from source at gitlab.com/betbetterworld/betbetter-r.

Feed for readers and aggregators: /rstats/feed.xml. These posts are also syndicated on R-bloggers, the daily digest of the R community.

Data licensed CC BY 4.0, free to reuse with a credit. Model estimates, not advice. 18+. If gambling is causing you harm: gamblinghelponline.org.au.