No — reliable public sources do not currently confirm whether Bryan Zayas is left-handed.

Bryan Zayas is a professional boxer. While specific details about his career trajectory may vary, he is known within boxing circles for his participation in various bouts.

Like many professional boxers, Zayas has worked to build his record and reputation through competitive matches, often facing a range of opponents in his weight class.

Information about professional boxers, especially those not at the very top of their sport, can sometimes be limited in public domain, focusing mainly on fight records rather than personal details.

Boxers typically train rigorously to maintain peak physical condition and develop their skills, aiming to advance their careers through victories and notable performances.