Russian fighter Mark Vologdin celebrates his 26th birthday on April 18, 2026. He is scheduled to make his UFC debut later that evening against John Castaneda at UFC Winnipeg. The bout is set to begin at 00:30 Moscow time. Vologdin will look to mark his birthday with a victory in his first octagon appearance. Details about his previous record or fighting background are not provided in the announcement.
Russian prospect Mark Vologdin turns 26 years old on April 18, 2026, and will celebrate by stepping into the UFC octagon for the first time that same evening, taking on John Castaneda at UFC Winnipeg, with the bout scheduled to get underway at 00:30 Moscow time.
Castaneda, known as "Sexi Mexi," brings considerable experience into this matchup. The 34-year-old American, who trains out of The Academy, carries a professional record of 21-8-1 and fights out of a switch stance. Standing five-foot-six with a 71-inch reach, Castaneda is an active and accurate striker, landing 4.42 significant strikes per minute at a 50 percent accuracy rate. He also supplements his stand-up game with 1.68 takedown attempts per 15 minutes, making him a well-rounded threat for any debuting fighter to navigate.

Vologdin steps in on his birthday with the added weight of making his first octagon appearance. The UFC has not released detailed record or background information for the Russian fighter ahead of the contest.
Why it matters
- Castaneda's experience — 21 wins and a draw — poses a steep test for any UFC newcomer
- A birthday victory would give Vologdin an immediate statement result in his debut
- The fight adds a compelling storyline to the UFC Winnipeg card, pitting a seasoned veteran against a fresh face in the division








