2020-05-19

CPBL Reveals COR Value of 2020 Season Ball

Did the CPBL mess up the ball again this season? That is something everyone has been speculating since spring training as the number of home runs skyrocketed.

On May 18, the CPBL revealed the results of the two different batch of balls they sent for testing. Just like everyone suspected, it is way higher than before coming in at 0.571 (#2) and 0.574 (#1). For the 2019 season, the COR value was at 0.563.

In the past, the CPBL has set the ball’s COR value between 0.540 to 0.580. However, in 2017, the team owners decided to control it between 0.550 to 0.570.

So, what does that mean for this year’s ball? Yep, the league once again displayed their incompetence when it comes to quality control. In a way, the 2020 season ball did not meet the standard as it exceeded the 0.570 limits requested by the team owners.

Hi CPBL, You Had One Job

I am just throwing out some questions that I have for the league. Why is it so hard to keep the ball as per team owners’ request? Why don’t they do any quality control before and after the ball production?

COR Values in MLB, NPB and KBO

The MLB is reportedly keeping their ball COR value between 0.514 to 0.578. Both MLB and CPBL are using the same testing method.

Japan’s NPB and Korea’s KBO, on the other hand, are using a different testing method, their COR value is between 0.403 to 0.423. You can not compare this figure with the MLB and CPBL’s COR value.