Here are a few, in order:
Takehiko Bessho was a star pitcher in the early days of Japanese pro baseball.
Hideo Fujimoto posted a 0.79 ERA in 1943.
Hisanori Karita was a star player before the formation of Japanese pro leagues (although this card is from after baseball in Japan went pro).
Lefty O'Doul, you know him.
And lots more
in this thread.