Phone: 925-753-1167
Email: [email protected]

D1 & Only Martial Arts Academy
3385 Deer Valley Road
Antioch, CA 94531

Business Hours:
Mon-Thur 4pm-9pm
Friday 4pm-7pm
Saturday 9am-11am
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About Us 2017-11-14T15:29:02+00:00

DEVELOPING LIFE CHAMPIONS

The purpose of D1 & Only Martial Arts is to create a friendly, family-oriented environment where people feel welcomed and special. It is to provide our students with the most comprehensive, realistic and effective self-defense system available. We strive to make a positive impact in their lives through our various character enrichment programs, which focus on leadership, academic performance and teaching basic financial principles.

Our objective is not to create world champions; it is “Developing Life Champions!”

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OUR HISTORY

In 2000, our school’s founder, Master Tim Calvin purchased Pallen’s Martial Arts from one of his instructors, Professor Joseph Pallen. At that time, we only taught Senkotiros Arnis (Philippine stick and knife fighting) and Kajukenbo, which is a hybrid street fighting art comprised of Karate, Judo and Ju-Jitsu, Kenpo Karate and Chinese and Western Boxing.

In 2005, Master Tim changed the name of the school to Delta One Martial Arts and Fitness Center and he incorporated Brazilian Jiu-Jitsu and Kickboxing into our curriculum.

In 2014, Master Tim saw the necessity for yet another change, modernizing our system to fit the self-defense needs of today’s society and creating an exciting program designed to help people mature, develop and grow to reach their full potential.

To complete our well-rounded martial arts program, known as the Kajukenbo “Urban Self-Defense” System, we included Krav Maga, a highly effective self-defense system created and taught by the IDF (Israeli Defense Forces) into our curriculum. We saw that by blending key concepts and techniques from the different martial arts programs we taught into one system, it made that system highly effective and extremely practical for today’s urban environment. Our students are now capable of defending themselves standing, on the ground, against multiple attackers and attackers with various weapons, such as knives and guns. They are also capable of utilizing sticks and knives as a practical and realistic means of defending themselves.

Tiera Calvin

D-1 & ONLY OFFERINGS

We are not your average, every day, run of the mill martial arts facility. We’re different and we love it and pride ourselves on it! We strive to be exceptional, innovative, creative, unique and one of a kind. We are D1 & Only Martial Arts!

FOR OUR STUDENTS

  • YET (Young Entrepreneurs of Tomorrow): YET teaches our students about basic financial and business principles.
  • ASAP (Academic Success and Achievement Program): ASAP helps our students with their homework and we tutor students who are struggling academically.
  • LOT (Leaders of Tomorrow): LOT helps our students develop their leadership skills and abilities. These additional programs are FREE for our students.

FOR OUR FAMILIES

  • Kids Only, free group birthday parties each month to help celebrate a special day
  • FREE Parent’s Night Out each month so you can have a date night, a night out with the guys or girls, or just a night to relax while the kids have fun at the school playing video games, dodgeball, watching movies, or a host of other fun-filled activities
  • Picnics and numerous parties throughout the year

FOR OUR COMMUNITY

  • Free anti-abduction seminar
  • Free bully prevention seminar
  • Free women’s self-defense seminars
  • Cancer awareness and fundraiser event, “Kick Cancer to the Curb” where we raise money for a person battling cancer to help with their financial needs

MEET OUR STAFF

Master Tim Calvin
Master Tim CalvinFounder & Instructor
Master Tim is the founder of D1 & Only Martial Arts Academy and the Kajukenbo “Urban Self-Defense System”. Master Tim has trained in the martial arts for 23 years. He has a Bachelor’s of Science (B.S.) degree in Business Management and a Master’s in Business Administration (MBA) degree from WGU (Western Governor’s University).

• 5th Degree Black Belt in Kajukenbo
• 5th Degree Black Belt in Senkotiros Arnis,
• Certified Level II Krav Maga Instructor
• Certified Kickboxing Instructor
• Blue Belt in Brazilian Jiu-Jitsu
Sifu Jarell Calvin
Sifu Jarell CalvinChief Instructor
Sifu Jarell is the Chief Instructor of D1 & Only Martial Arts Academy. Sifu Jarell has trained in the martial arts for 19 years. He has an Associates of Arts (A.A.) degree in Liberal Arts (Math and Science) from Los Medanos College and he is working on earning his Bachelors of Science (B.S.) degree in Business Marketing from WGU (Western Governor’s University).

• 4th Degree Black Belt in Kajukenbo
• 1st Degree Black Belt in Senkotiros Arnis,
• Certified Level I Krav Maga Instructor

Sifu Jarell was an amazing competitor. He was a National Champion in Open / Creative Forms and he won 4th place in sparring at the Super Grand “World Games” in the National Black Belt League (NBL) in 2011. He is also in charge of our Demonstration Team and he has created and performed demos for the Sacramento Kings and the Golden State Warriors half-time shows.

Sifu Jason Tse
Sifu Jason TseInstructor
Sifu Jason is one of our Black Belt Instructors. Sifu Jason has trained in the martial arts for 13 years. He is a Senior at Antioch High School, a 4.0 student and member of Antioch High’s “Engineering Program”. Sifu Jason will be going off to college at the end of 2017.

• 3rd Degree Black Belt in Kajukenbo
Sifu Isaiah Cruz
Sifu Isaiah CruzInstructor
Sifu Isaiah is one of our Black Belt Instructors. Sifu Isaiah has trained in the martial arts for 8 years. He is a graduate of Skyline High School in Oakland and he is currently attending Los Medanos College working on earning his degree in information technology (IT).

• 1st Degree Black Belt in Kajukenbo
Lupe Brown
Lupe BrownInstructor
Lupe is our Receptionist and a Senior at Deer Valley High School. She has trained in the martial arts for 5 years and she will be attending Los Medanos College next year working on earning a degree in Childhood Development.

• 1st Degree Black Belt in Kajukenbo
Vickie Guevara
Vickie GuevaraOffice Manager
Vickie is the Office Manager of our Antioch Academy. She is a loving wife and mother of two amazing sons, who both train at D1 & Only Martial Arts. Vickie also works for the Antioch Unified School District as an administrative assistant. She has a heart of gold and she is loved by everyone (parents and students alike) at our Antioch facility.

Developing Life Champions

We provide a comprehensive self-defense program that makes a positive impact on our students’ lives

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