Jeff Cobb has seamlessly transitioned from an Olympic wrestler representing Guam to a celebrated professional wrestling star, known for his powerful in-ring style and diverse championship reigns. After representing Guam at the 2004 Summer Olympics in Athens in the men’s light heavyweight freestyle category, where he proudly served as the nation’s flag bearer, Jeff Cobb transitioned into professional wrestling. Concluding his Olympic run in 21st place, Cobb began his professional wrestling career in 2009, training with Action Zone Wrestling (AZW) in Hawaii. Under the ring name ‘Mr.
Prior to his WWE engagement, Cobb also completed significant stints with Ring of Honor (ROH) and All Elite Wrestling (AEW). In May 2025, Jeff Cobb made his highly anticipated debut with WWE, rebranding as JC Mateo. He swiftly joined The MFT stable on SmackDown, marking the latest chapter in his decorated career as a dynamic and impactful force in professional wrestling.