Athens Olympic gold medalist Keiji Suzuki announced Tuesday he is retiring from international judo to become the head coach of his alma mater, Kokushikan University.

“I had shoulder problems, and I couldn’t afford to hold Japanese judo back any more,” Suzuki said. “I hope I can help Kokushikan become the best team in Japan, and develop judoka I can be proud of.”

The 32-year-old, who won at the 2003 and 2005 world championships in the open and 100 kilogram classes, respectively, said he still plans to take part in domestic competitions, but made it clear his days of wearing the Hinomaru are over.