World champion Takamasa Anai defeated Russia's Sergey Samoylovich in the men's 100-kg final Sunday at the Grand Slam meet in Rio de Janeiro.
But Athens Olympic men's over-100 kg gold medalist Keiji Suzuki, currently ranked sixth in the world, suffered a first-round loss to 101st-ranked Joao Gabriel Schlittler.
Schlittler went on to win an all-Brazilian final against Daniel Hernandes.