John Castañeda, detto «Sexi Mexi», è un lottatore di MMA della categoria pesi gallo. Il suo record nelle arti marziali miste è 21–8–1 (vittorie–sconfitte–pareggi). Scheda: 34 anni, altezza 168 cm, allungo 180 cm.
| Esito | Avversario | Metodo | Evento | Data |
|---|---|---|---|---|
| Draw | Mark Vologdin | Draw (majority) | UFC Fight Night: Burns vs. Malott | April 18, 2026 |
| Loss | Chris Gutiérrez | Decision (split) | UFC on ESPN: Machado Garry vs. Prates | April 26, 2025 |
| Loss | Daniel Marcos | Decision (unanimous) | UFC on ESPN: Cannonier vs. Imavov | June 8, 2024 |
| Win | Kang Kyung-ho | Decision (unanimous) | UFC 295 | November 11, 2023 |
| Win | Muin Gafurov | Decision (unanimous) | UFC on ESPN: Kara-France vs. Albazi | June 3, 2023 |
| Loss | Daniel Santos | KO (punches and knee) | UFC Fight Night: Dern vs. Yan | October 1, 2022 |
| Win | Miles Johns | Technical Submission (arm-triangle choke) | UFC Fight Night: Hermansson vs. Strickland | February 5, 2022 |
| Win | Eddie Wineland | TKO (punches) | UFC Fight Night: Blaydes vs. Lewis | February 20, 2021 |
| Loss | Nathaniel Wood | Decision (unanimous) | UFC on ESPN: Whittaker vs. Till | July 26, 2020 |
| Win | Marcelo Rojo | Submission (arm-triangle choke) | Combate Americas 35 | April 12, 2019 |
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