September 2009 CBL Tryouts Flyer
Found some mentions of a September 2009 CBL tryout at Cabrillo College. Here is the PDF flyer:
http://www.cabrillo.edu/academics/athletics/baseball/documents/CBLTRYOUTFLIER2.pdf
Here is a mention from Santacruzlive.com:
If you know of prospective players looking to be informed of independent pro baseball tryouts in 2018 and beyond then have them sign up here: http://www.independentbaseballtryouts.net/