2020 US Muaythai Open West National Championships

December 18 : First Day | Weigh-In / Check- In

December 19, 2020: Elimination Round

December 20: Championship Day



General Information

Below you will find all general information about the event.  If your question is not addressed on the website, please visit our FAQ page and submit a support request.

Important Medical Information

  • As of March 25, 2019, the State of Arizona will require all athletes ages 16 and older to undergo a blood screening for: Hep B/C and HIV
  • The state will accept tests taken within the CALENDAR YEAR.
  • The Official Physical Form (view & download below) must be signed by a licensed medical doctor (MD or DO). “NMD” credentials will not be accepted.
  • Pregnancy tests are required for female athletes age 16 and older.  Pregnancy test strips will be supplied at weigh-in/check-in.

Download, complete, and submit this medical form at the weigh-in.


The 2020 USMTO West Championships is guaranteed to be a thrilling display of championship Muaythai and doors will be open for spectators to witness this 5th annual event.

There will be a $25 admission price for daily passes, $35 for finals-only passes (Sep 22 only), and $50 for unlimited accessBEST VALUE (Sep 18, 19, & 20). Spectators can purchase tickets at the door or online by CLICKING OR TAPPING HERE. Lap children and toddlers are free! $10 discount off all admission prices for children 7 years and younger.

Fight fans can also stream the entire tournament and replays of past events online at Siamfights.tv.



Start Here

Scroll and read through the entire event page to learn what you need to know about this event.  Most of your questions or concerns will be addressed on the page or in the Official Rules. If you still cannot find your answer, please visit and read our FAQs.


Medical / Weight Control

As of March 25, 2019, the United States Muay Thai Association of Arizona (USMTA) per the State of AZ Boxing and MMA Commission will only require blood work (combative 3) for amateur athletes ages 16 and older, and pregnancy tests for female athletes ages 16 and older.

Female competitors age 15 and older must show a negative result on a pregnancy test. The USMTO will supply urine test strips during weigh-in and check-in)

Download, complete, and submit this medical form at the weigh-in.


NOTE: The USMTO may change your Weight Division or Experience Class in order to meet the needs of the Tournament (Involuntary Transfer). You may request a Voluntary Transfer to a different Weight Division or Experience Class at no charge as long as the USMTO receives the request within 48 hours of your event registration.


Click or tap here to schedule your weigh-in/check-in appointment

International Athletes

International Athletes: Click or tap here for visa and travel information, and to generate an official invitation.


Book Your Hotel

Do not wait to book your tournament hotel. Enjoy the convenience of your room close to the competition area. See the Official Tournament hotel booking link below.



Read The Rules - Win More Bouts

Start by reading the USMTO Official Rules. You can download them to your device as well. Helping your athletes prepare for competition starts here.

Coach & Cornerman Passes

The coaches pass is $59 (including the mandatory USMF annual membership fee) or just $39 for active USMF members. The USMF Coach/Corner membership will be valid for one calendar year and will allow registered coaches to participate in all USMF events. The USMF is the national governing body for Muaythai in the United States. Click Here To Register For Cornerman Pass.

VIP Warmup Studios

VIP Warmup Studios are usually sold out within weeks of availability and have a waiting list! Coaches, book your private warmup and break rooms before the last one sells out.


Official Athlete Roster

To view the Official Athlete Roster you can visit the Siam Fights Rsportz HERE. You can filter results in many different ways to see your division and opponents.

Event Schedule

December 18

First Day | Weigh-In / Check- In

December 20

Championship Day

December 19, 2020

Elimination Round

Hotel & Venue Information

Join us at the Sheraton Crescent in Phoenix, AZ for the 2020 U.S. Muay Thai Open West Championships!  We want you to be immersed in the action and we want you to enjoy all of the conveniences and amenities of this facility. Stay at the tournament hotel! We have arranged for convenience rates for USMTO athletes, coaches, and spectators, and FREE BREAKFAST for everyone who spends a night at the Sheraton Crescent.

Book Your Stay

The Benefits of the Sheraton: Be sure to make time to indulge in the superb amenities, including a spectacular pool complex replete with an Olympic-sized pool and a three-story waterslide, plus a Sheraton Fitness Center featuring racquetball, tennis and squash courts. Dine with us at Indigo Bistro, our signature Phoenix restaurant. To be Announced.

Directions to Venue

Travel Directions from PHX Sky Harbor Airport

From PHX Airport


 Public Transportation



Register to Compete!

Registration prices increase incrementally. Register now and take advantage of the lowest price. If no other athletes are in a division, you should still register to encourage others to join the division. We will attempt to merge divisions 30 days prior to competition, and if there are no matches, you will receive a refund of your registration fee.

Schedule Your Weigh-In!

Schedule your time to check-In and weigh-In when you want to! Our system makes your weight management easier by allowing you to show up at the time of your choosing.  Please do not select a time until you have completed your registration and be sure to bring all necessary paperwork with you to check-In.