9, just like in the U.S. The Pacific League has the designated hitter rule so there are ten with the DH and pitcher (like in the American League). The Central League does not used the DH.
Japanese teams
There are currently 30 teams.
20
There were 30 teams in Major League Baseball in 2005.
14
12
Japanese teams
Yes.
30 teams
30 teams
There are currently 30 teams.
32
not many
Eight teams.
10
30 in MLB.
30