Combat Sports Rules
Rules vary by discipline, commission, sanctioning body, and event
Showdown Fighting events span boxing, MMA, kickboxing, Muay Thai, grappling, exhibition bouts, and mixed-discipline fight cards. Rules are not the same for every fighter on every card — they vary by discipline, commission, sanctioning body, event, experience level, and amateur or professional status.
Mandatory Blood Work — All Fighters, All Disciplines
Every fighter competing on any Showdown Fighting card is required to provide current blood work. This applies to all fighters in all Showdown events — amateur and professional, and regardless of discipline: boxing, MMA, kickboxing, Muay Thai, grappling, exhibition bouts, or mixed cards.
Blood work must cover all of the following:
- Hepatitis A (Hep A)
- Hepatitis B (Hep B)
- Hepatitis C (Hep C)
- HIV
Blood work must be submitted to your fighter profile through your Showdown account. Results sent by email, text, social media, or handed to a coach or gym are not accepted and will not clear a fighter.
No fighter will be approved to compete without all four results on file and reviewed by Showdown medical staff. Incomplete blood work means no bout, no weigh-in, and no fight-night entry.
Important: The rules summaries below are provided as a general guide only. Final bout requirements may vary based on the governing athletic commission, sanctioning organization, event officials, fighter age, experience, weight class, and location. Instructions issued by the referee, ringside physician, commission, or event officials take priority. This information is not legal or regulatory advice.
Final Authority and Rule Changes
Showdown Fighting may update event procedures when necessary for safety, legal compliance, venue requirements, sanctioning requirements, or athletic commission direction. The official rules provided at weigh-in or the event take priority over this website summary. The final approved rules and commission instructions govern each bout.