What the real fight was
UFC 239 was held at the T-Mobile Arena in Las Vegas on 6 July 2019. In the fight of Jorge Masvidal vs Ben Askren, Masvidal won by knockout with a flying knee after 5 seconds. Per ESPN and Guinness World Records it is the fastest knockout in UFC history; the record it replaced was 6 seconds, set by Duane Ludwig against Jonathan Goulet in 2006. Those are the 2019 sources. We have not checked whether anyone has been faster since, so check the current record before you write the fastest-ever claim into a caption as a fact about today.
