Team Games W L T W% GB
Seibu 49 30 19 0 .612 -
Daiei 48 26 20 2 .565 2.5
Nippon Ham 48 25 22 1 .532 4
Kintetsu 49 22 26 1 .458 7.5
Orix 45 19 25 1 .432 8.5
Lotte 49 19 29 1 .396 10.5
Now go and read this thread and you will see that the answer is Seibu, Daiei, and Nippon Ham. (We'll just leave the fact that all of the teams haven't played the same number of games out of this.) To answer the question you didn't ask yet, I'll quote the above press release:
The second and third place teams will have a best two out of three (if necessary) game series with the winner going against the first place team in a best of five (first to win three) game series.
More information on the subject is available in the above thread.
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It is my sincere hope that once you learn a bit about what we're about here that you will join the community of contributors.
Michael Westbay
(aka westbaystars)
Founder