Arena Training Center instructors are expert martial arts practitioners in their respective fields.


Steve Papadakis


Steve is a National and International Certified Judo Coach and Judo First Degree Black Belt, and has trained numerous competitors to compete at the world-class level.

  • Coaching staff for 2013-2014 Panamerican Infantile Team
  • Coaching staff for 2015 and 2016 Cadet and Junior World Team
  • National boxing highschool champion (Greece)

Nefeli Papadakis


Nefeli is Steve's daughter and a world-class gold medalist competitor with the goal of participating in the 2020 Olympics. As a First Degree Black Belt, Nefeli's drive and work ethic is matched by her desire to teach students.

  • Repeat Illinois State champion
  • Repeat National Champion
  • European Cup Gold Medalist (Greece, 1st place)
  • Cadet World Team Member(BOSNIA,5th place)
  • 3X Junior World Team Member
  • Team USA,junior development Tokyo Olympics
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George Papadakis


George is a Judo First Degree Black Belt and Judo National Champion. George is interested in bringing Judo to a wider audience and loves to create an atmosphere focused around fun and development.

  • Repeat Illinois judo champion
  • 2011 National Champion