Corey Mendoza

Corey Mendoza


After High School, Corey joined the Marine Corp. After his time in the Marine Corp, Corey started competing in martial arts for his mental health. He won two state championships and began coaching at his family’s gym in Hercules.  Corey earned his CrossFit Coaching certification and tool on the role of Head Coach at Wine Country CrossFit in Napa. 

He joined Diablo CrossFit as a coach during the pandemic and has flourished. He runs Diablo’s Teen Strong program and also coaches our Olympic Lifting class. 

“The best part of coaching is helping people, whether it’s is in achieving their goals or feeling comfortable with themselves” . 


  • CrossFit Level II Trainer
  • NASAM Level 1
  • CF Olympic Lifting 1
  • Core Flyte Specialist
  • Mobility WOD 101
  • Brand X Kid Certification
  • CPR, AED, & First Aid Certificate