Here is a 2013 video featuring player interviews from the Freedom League:
The league did not continue on after that season, so this is an example of what has happened virtually every season since the independent league business model started in 1993.
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If you need some help increasing your 60 yard dash speed times, arm velocity, vertical leap ability, hitting power or improve your muscle mass for any professional baseball tryout (or private workout) then here are some resources to help you: Resources for improving your chances at any pro baseball tryouts