Hanging Up the Cleats: From International Pro Football to Olympic Decathlon Pursuit | Jason Diaz Jr.
After over 15 years of dedicating my life to football, I made the decision to hang up the cleats and pursue a new challenge: Track & Field and the Decathlon.
What many people may not know is that the desire to compete at the highest level in track and field was actually born years ago, shortly after my final collegiate football season at Fresno State.
At the time, I believed my athletic career may have been over after not getting drafted to the NFL. I began training on the track simply for my health and personal growth, but while out there I realized something still burned deeply inside me — the desire for elite competition and elite physical expression through performance.
I remember thinking to myself how incredible it would be to compete on the Olympic stage someday. But in that moment, I brushed the thought aside and simply told myself:
“Maybe in another life.”
Since then, life took me on a completely different journey.
I had the opportunity to play professional football overseas, which I believed was going to become my path toward eventually reaching the NFL. Along that path came countless experiences — training for Fresno State Pro Day in front of NFL scouts, moving overseas, returning back to the United States for visa issues, and unexpectedly having multiple professional contracts fall through only weeks before reporting dates.
Through all of the uncertainty, adversity, and reflection, I eventually realized something important:
What I truly loved most was not simply football itself.
It was the pursuit.
The preparation.
The process of becoming.
Seeing consistent growth and continuous improvement.
Chasing faster sprint times.
Higher jumps.
Greater strength.
Better athletic expression.
Over time, I began feeling ready for a new arena of competition — one measured purely by output. Free from subjective evaluation, external bias, or coaching preferences. Just measurable performance and the athlete standing completely in front of the work.
And that’s when the vision that first entered my mind years before came back clearly:
The Decathlon.
The ultimate test of athleticism.
The pursuit of becoming the best all-around athlete possible.
So now, that is the path I walk.
Football helped build me into the man and athlete I am today, and I’ll forever be grateful for everything the sport gave me. But I now move forward evolved — continuing to pursue higher levels of performance, growth, and self-expression through Track & Field with the ultimate goal of reaching the Olympic stage.
The Birth of JMDII: Passing Down the Blueprint
This evolution is exactly why JMDII Elite Performance Academy™ was born.
JMDII is a direct, active extension of my previous experience in high level competition through football, everything I learn through studying in elite performance environments, and most of all, the personal application of it all through my training toward reaching the Olympic stage.
Every custom program, sports science metric, and mentorship framework we deliver to each athlete we work with in JMDII Elite Performance Academy is built on the exact philosophy that has helped me evolve in my athletic career: training for pure, unarguable output, and staying healthy along the way.
We don’t guess, and we don’t rely on opinions. We track variables, monitor concrete data on paper, and help the next generation of athletes build their own bulletproof blueprint for success.
Explore the system: https://jmdii.com