Overview

• Tanaka announced his retirement on June 4, 2025, citing cumulative eye injuries that made further sparring impossible.
• He underwent surgery on both eyes immediately after his October 14, 2024 bout against Phumelele Cafu, but his vision never fully recovered.
• A hernia operation on his neck compounded his injuries and left his eyes brittle.
• Tanaka became the fastest boxer to win world titles in four weight classes in just 21 bouts, surpassing Oscar De La Hoya’s previous mark.
• He ends an 11-year professional career with a 20-2 record that includes 11 knockouts.