What happened: Genesis beat Diaz in an amateur bout at Cage Titans 78 in Plymouth, Massachusetts, ending the fight with a submission that badly damaged Diaz's arm. The finish has circulated as one of the more graphic submissions to surface late in the 2026 MMA calendar.
Why it matters: Violent finishes from regional cards can push otherwise obscure prospects into wider year-end conversations. For Genesis, this result stands out because memorable stoppages often do more to raise a fighter's profile than a routine win on the same stage.
By the numbers: Diaz fell to 0-6 as an amateur, and five of those losses have ended in the first round.
What to watch: Watch whether Genesis gets a tougher matchup before year-end and whether this finish keeps showing up in submission-of-the-year debates.