La New Bears (#1 seed): The Bears won the number one seed by being the regular season champion for both halves of the season, thus securing the best overall record as well. This is the first time ever in the playoff for the Bears and, as the top seed, secure automatic entry into the Taiwan Series.
Uni-President Lions (#2 Seed): The Lions are returning to the playoffs after missing out last year. They are the second seed based on their having the second best overall record through the whole season. They lost the Taiwan series to the Bulls in 2004.
Sinon Bulls (#3 seed): The Bulls are entering the playoffs for the fourth consecutive year and are the number three seed based on having the third best overall record through the season. Sinon is the two-time defending Taiwan Series champion, and also made an appearance in the Taiwan Series in 2003.