Four teams, the Rakuten Monkeys, Uni-President Lions, Fubon Guardians, and CTBC Brothers will contest the CPBL, the highest level of professional baseball played in Taiwan.
In May 2019, commissioner John Wu announced that the CPBL had reached an agreement with Ting Hsin International Group, largest and managing shareholder of Wei Chuan Foods Corporation, to reactivate Wei Chuan Dragons.
[11] During first-half season, it was discovered that the coefficient of restitution (COR) of the official game baseball had an average of 0.573 between two tests, above the 0.550~0.570 target only below the 0.540~0.580 rejection limit, resulting in faster ball-batted speed and high homerun production.
After the May General Managers meeting, the League decided to tighten quality control of the official game baseball, with COR of 0.560 as the target.
[14][15] English-language broadcasts were added on a trial basis and streamed via the Twitter account of Eleven Sports Taiwan.
[16] A number of international fans tuned in,[17][18] and all CPBL teams subsequently announced that they would feature English commentary.
Game #193, hosted by Lions at their homefield Tainan Municipal Baseball Stadium, was suspended on September 12 at the top of Third inning after one out due to rain, with the score tied at 1:1.
Coupling with timely hits from the bottom-half of the batting order, the Uni-Lions defeated the Brothers with a score of 6:0 in the final home game of the season and forced the series back to Taichung.