Jason asked an interesting question in a comment to this post the other day: what players have won championships in both MLB and NPB? We came up with a couple names off the top of our heads, but I spent some time with both Baseball-Reference and Japan Baseball Daily and I think I've come up with the complete list.
First, here's my criteria: the player had to actual appear in the World Series or Nippon Series to actually count. It's not good enough to simply play for the team during the season they won the championship, or even appear on the post season roster, but not appear in a game.
So here's the list:
|Player||MLB Champ||NPB Champ|
|Dan Gladden||87, 91 Twins||94 Giants|
|Tadahito Iguchi||05 White Sox||03 Hawks|
|Jim Lefebvre||65 Dodgers||74 Orions|
|Johnny Logan||57 Braves||64 Hawks|
|Hideki Matsui||09 Yankees||94, 00, 02 Giants|
|Daisuke Matsuzaka||07 Red Sox||04 Lions|
|Hideki Okajima||07 Red Sox||00, 02 Giants, 06 Fighters|
|So Taguchi||06 Cardinals||96 Blue Wave|
|Gary Thomasson||78 Yankees||81 Giants|
|Roy White||77, 78 Yankees||81 Giants|
Iguchi may shortly have a second NBP champion to add to his list. Taguchi was on the Phillies World Series roster in 2008, but did not play.
The players eliminated because they played for a team that won a championship but didn't play in the World Series were Adrian Garrett (14 games for the 1972 A's won championship with 1979 Carp), Doug Jennings (4 games for 1989 A's, NPB champ with 1996 Blue Wave) and Domingo Martinez (15 games between 1992 & 1993 for Blue Jays, NPB Champ with 2000 Giants).
The one guy I'm on the fence on including is George Vukovich, who was on the Phillies 1980 World Series roster but did not play. He won NPB championships with the Lions in 1986 and 1987.
That's Dan Gladden's card from the 1994 BBM Nippon Series set (#S26) at the top of the post and George Vukovich's card from the 1987 Play Ball set (#34) at the bottom.