By career WAR, the top Japanese MLB players include Ichiro, Darvish, Nomo, and Tanaka.
Ichiro stands alone among position players; Darvish and Nomo contend at the top among pitchers.
Among active players, Ohtani's unique two-way WAR accumulation stands apart.
In the next decade, Ohtani, Yamamoto, and Imanaga will likely reshape this list.