What each source supplies to the MMA pages, and the dates it covers in our copy.
Sherdog
Events, cards and results for every organisation; the backbone of the corpus. 77,271 events, 1963 to 2026.
Live play-by-play round scoring for 8,009 contests, 2008 to 2026, about a third of them outside the UFC.
UFC statistics, via the Greco1899 dataset
UFC events, round-by-round strike and control statistics and official scorecards. 792 events, 1993 to 2026.
MMADecisions
Judges' round-by-round cards outside the UFC for 2,407 contests, media scorecards for 5,796 from 1997, and fan scoring for 5,999 from 1996.
BestFightOdds
Opening and closing lines for 20,720 contests in 117 organisations, 2007 to 2026 (4,645 of them in the UFC), and line movement for 4,202 UFC contests from 2017.
Ultimate UFC Dataset
Closing odds for 6,917 UFC contests, 2010 to 2026.
Dates of birth come from Sherdog, the UFC dataset and Wikidata, for about 37,000 fighters so far. Title reigns
were compiled and checked by hand.
Every source is credited where its data is shown: each fighter's page links to their Sherdog record, and
each section of a fight's page names where it comes from. The ratings, the curves and the lists are this site's
own. A source that wants a record changed or removed can ask on the About page.