John Castañeda vs. Alatengheili Booked for UFC Vegas 121 on Sept. 26

John Castañeda is set to meet Alatengheili at UFC Vegas 121 on September 26, adding another confirmed matchup to the growing card.

Alatengheili, nicknamed "The Mongolian Knight," enters the bout carrying a professional record of 17-10-2 at 34 years old. The orthodox fighter stands five-foot-five with a 66-inch reach and has built his UFC career on a blend of striking and wrestling. He lands 2.82 significant strikes per minute while averaging 1.74 takedowns per 15 minutes, showing a willingness to mix his attack across multiple ranges. His striking accuracy sits at 32 percent, and he has recorded no submission attempts per 15 minutes, suggesting his grappling game is almost entirely takedown-focused rather than submission-oriented.

Castañeda's verified statistics were not included in the available data, but he is an established bantamweight with notable UFC experience heading into this assignment.

Why it matters

• The pairing brings together two experienced bantamweights, giving both men a meaningful opportunity to climb the divisional standings.
• Alatengheili's takedown-heavy, mixed approach will present a stylistic challenge for any striker-leaning opponent.
• A win for either fighter could position them for a higher-profile booking at 135 pounds later in the year.

UFC Vegas 121 is scheduled for September 26, and the card continues to take shape with this addition.