Coach Tzannos joined the Lesley Men's Basketball staff during the fall of 2025 as an Assistant Coach.

Tzannos brings a wealth of basketball knowledge to the Lesley staff and holds coaching certifications from USA Basketball, NCAA Basketball and the National Federation of State High School Association (NFHS).

His coaching journey began with Hoop Group where he served as a camp coach before signing on with Seacoast Hoop Labs as an Assistant General Manager. He went on to work for Boston Elite Sports Training as a freelance basketball trainer and then served as the Head Coach at the Mountain View School. He then served on the coaching staff at Bow High School before becoming the Head Coach of the varsity program at Mascenic Regional High School, eventually landing at Concord Academy as the Recruiting & Video Coordinator/Assistant Coach. Tzannos has also worked with over 50 active collegiate and professional players through private lessons or player development clinics sponsored through his network.

In addition to his coaching endeavors, Tzannos has been a part of One Dream Basketball in roles including the Director of Player Development and Assistant Program Director and also served as the Director of Basketball Operations at DSC International. He is also the owner and founder of Triangle Offense, LLC where the company empowers athletes to reach their full potential through personalized coaching and mentorship.

Tzannos graduated from Southern New Hampshire University with a BS in Sport Management, graduating Magna Cum Laude. At SNHU, he served as a campus tour guide under the Penman Guide Leader program.