John Castaneda Shaved Head to Make UFC Weight

The 34-year-old fighter shed necessary weight by removing his hair to qualify for his bout at UFC Vegas 121.

Updated on Sept. 25, 2026 in Mixed Martial Arts

John Castaneda Shaved Head to Make UFC Weight

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John Castaneda successfully reached the 136-pound limit for his bantamweight clash at UFC Vegas 121 after initially missing the mark by 0.5 pounds. The fighter opted to shave his head to shed the final fraction of weight needed during a 20-minute window.

Why it matters

Making weight is a mandatory requirement for competitors to ensure bouts proceed as scheduled, with fighters often resorting to extreme measures to avoid penalties or fight cancellations. This success keeps Castaneda on track for a pivotal matchup as he looks to snap a three-fight winless streak.

Castaneda hit the 136-pound mark on his second attempt after coming in 0.5 pounds over the limit. The 34-year-old enters this event seeking his first victory in three consecutive outings.

The players

John Castaneda

John Castaneda is a 34-year-old professional mixed martial artist competing in the bantamweight division.

Alateng Heili

Alateng Heili is an active professional fighter who is scheduled to face John Castaneda at UFC Vegas 121.

The details

Castaneda returned to the scale at the UFC Apex 20 minutes after his initial weigh-in attempt. By shaving his head, he effectively met the requirements to clear the scales for his upcoming fight against Alateng Heili.

John Castaneda weighed in for his bout on September 25, 2026.
UFC Vegas 121 is scheduled to take place on September 26, 2026.

Season Trajectory

This weigh-in successfully preserved the card for UFC Vegas 121, preventing a last-minute disruption to the event lineup. Securing a win here is crucial for Castaneda to remain a viable competitor in the bantamweight division after his recent string of winless performances.

The weigh-in ensures the bout between Castaneda and Alateng Heili remains on the official fight card for the upcoming event. Fans can expect the fight to proceed as planned following the successful weight certification.

The takeaway

Fighters go to extreme lengths to ensure they meet contractually obligated weight limits during the final hours before an event. Precision in these final moments is essential for athletes hoping to remain active and competitive within the promotion.