I see only 7 of 20 on the west coast.
Of course you left off Kasahiro Sasaki (Sea), Kenjhi Jojima (Sea), Shigetoshi Hasegawa (Anaheim), Hideo Nomo (LAD), Kaz Ishii (LAD).
But then you left out a bunch to play on non-west coast teams, too, like Kaz Matsui (Mets) and Nori Aoki (Brewers).
And when did Kikuchi retire?!?