Jay Zeballos has been a student under Jean Jacques Machado for over 25 years, receiving his Black Belt in 2007. A full-time instructor since 2010, he teaches adult and youth classes at the JJM Headquarters in Woodland Hills, CA. Jay has assisted Jean Jacques with the development of much of his instructional media including designing and launching the first online training program for Brazilian Jiu-Jitsu back in 2006, as well as co-authoring two best-selling books (The Grappler's Handbook Vols. 1 & 2). He is also the executive director of Jean Jacques affiliate program and conducts private training, workshops and seminars both domestically and internationally.

A fourth degree Black Belt, Zeballos is also one of Jean Jacques’ most active and decorated competitors, earning numerous titles in the Black Belt Master Divisions:

 - 4x IBJJF American National Champion -
- 2x IBJJF World No Gi Champion -
- 2x Jiu-Jitsu World League Champion -
- 2018 IBJJF American National No Gi Champion -
- 2018 IBJJF Los Angeles International Open Champion -
- 2017 IBJJF Seattle International Open Champion -
- 2015 IBJJF San Francisco International Open Champion -
- 2013 IBJJF Long Beach Fall International Open Champion -
- 2011 All America Champion -
- 2010 North American No Gi Champion -
- 2009 IBJJF Pan Jiu-Jitsu Champion -