Overview
- El Grande Americano defeated Dominik Mysterio to capture the AAA Mega Championship in the main event on Sunday night, Sept. 13, at Arena CDMX in Mexico City.
- The match was no‑disqualification and broke down into repeated outside interference from J.D. McDonagh, Los Americanos (Rayo and Bravo), Omos and Liv Morgan before the official referee was incapacitated.
- With the referee down, AAA general manager Rey Mysterio entered wearing a neck brace and a referee shirt and made the three‑count that awarded the title to El Grande Americano.
- The finish resolved a two‑night, cross‑border build that began in Las Vegas when Omos battered Rey Mysterio on Night One, and it capped a TripleManía 34 card that streamed on Uncrowned in the U.S. and on WWE’s YouTube channel for much of the world.
- Dominik had held the Mega title for about a year and this was his fourth defense, while coverage and on‑air commentary stressed that WWE’s visible talent, production and streaming involvement is reshaping AAA storylines and elevating performers such as El Grande Americano.