UFC Vegas 121 Fighters Completed Official Weigh-ins
Fighters hit the scales ahead of upcoming bouts on September 25, 2026.
Updated on Sept. 25, 2026 in Mixed Martial Arts

Live Poll
Do you believe a significant weight advantage dictates the winner of a professional MMA fight?
Local fight fans saw athletes finalize their preparations for UFC Vegas 121 as official weigh-ins were held. Several fighters confirmed their status for the scheduled matchups across the card.
Why it matters
Weight compliance is a critical step in finalizing the athletic integrity of professional bouts held within the valley. Official weigh-in results ensure all competitors meet the established requirements for their respective weight classes before stepping into the cage.
Official weigh-ins confirmed various athlete weights, including a 204-pound mark for Luis Hernandez and 197 pounds for Sedriques Dumas. The specific physical performance outcomes for these matchups remain to be seen in the ring.
The players
Luis Hernandez
A fighter competing at UFC Vegas 121 who weighed in at 204 pounds.
Sedriques Dumas
A fighter competing at UFC Vegas 121 who weighed in at 197 pounds.
John Castaneda
A competitor who reached the 136-pound weight limit on his second attempt.
Raul Rosas Jr.
A fighter who weighed in at 136 pounds for his scheduled bout.
Raoni Barcelos
A fighter who weighed in at 135 pounds for his scheduled bout.
The details
Athletes stepped onto the scale to verify their eligibility for the upcoming card in Las Vegas. John Castaneda successfully reached the 136-pound limit on his second attempt after missing the target on his first try. These weigh-ins serve as the final administrative hurdle before the event proceeds as scheduled.
Timeline
September 25, 2026: Official weigh-ins for UFC Vegas 121 were conducted.
Beyond the Strip
This event follows the standard Nevada State Athletic Commission weigh-in protocols required for all professional mixed martial arts events hosted in Las Vegas. The process mirrors established procedures for ensuring athlete safety and fair competition across the valley's resort venues.
The completion of weigh-ins confirms that the scheduled events are proceeding as planned for fans attending the venue. Commuters should remain aware of potential traffic shifts near the arena site as event crowds gather.
The takeaway
Weight discrepancies, such as the seven-pound difference between Luis Hernandez and Sedriques Dumas, often highlight the physical stakes of the upcoming card. Residents should monitor the official match results to see how these weight figures influence the final performance in the cage.
Further reading
For more on upcoming bouts and the local fighting scene, visit our Mixed Martial Arts section.
Live Poll
Do you believe a significant weight advantage dictates the winner of a professional MMA fight?




