With a strong initial roster, the Tigers won the first CPBL half-season championship in 1990, but ironically it was also the only one half-season championship it ever won throughout its history. Mainly due to the Mercuries Corporation's indifference and poor management, plus the team's lacking an amateur history which could have helped the unity among players, since the second half of 1990 this club had been marred by a chain of negative news including disunity, disobedience and factions among players and coaches . This team was further widely suspected to be seriously involved in the first CPBL game fixing scandal, but did not come to light because the Tigers fired its involved players in advance in 1996 .
In the 1990 Taiwan Series, the Tigers were defeated by the Wei Chuan Dragons 2-4, and except for winning the 2nd place in the upper 1994 and lower 1995 half season, this club had never gained an upper-half seat in the final seasonal standings throughout its history, as well as long time being the least popular and poorest attended CPBL team throughout its lifetime. After long time loss the Mercuries Corporation finally closed down the team after the 1999 season ended. Most Tiger's players and coaches were later absorbed by the Brother Elephants and Chinatrust Whales. In November 1999 right after the close down, the TVBS and Taiwan Major League's then chairman Chiu Fu-sheng(邱復生) ever invited Chen He-dong to sponsor the Taichung Agan, but Chen He-dong did not respond .
|Season||First Half-Season||Second Half-Season|
|Season||Preliminary Round||Championship Round|
|1990||-||-||-||Wei Chuan Dragons||2||4|