Four teams, the Lamigo Monkeys, Uni-President 7-Eleven Lions, Sinon Bulls and Brother Elephants will contest the CPBL, the highest level of professional baseball played in Taiwan. The season is divided into two halves, with each team playing sixty games in each half. The winners for each half-season plus the non-winner with the best overall record will qualify for the playoffs. In the event that the same team wins both halves, the next two teams with the best overall records will advance.
The Lions and the Monkeys played each other in 40 regular season games, and the Monkeys had the upper hand with 21 wins, 18 losses, and one tied game. The two teams also played each other in the 2006 Taiwan Series and 2007 Taiwan Series; the Monkeys defeated the Lions in 2006, but the Lions claimed the title in 2007.