Ng has a baseball career spanning over 30 years. She worked at the American League office for two years, then became the youngest assistant general manager at 29 for the New York Yankees. Ng was then the vice president and assistant general manager for the Los Angeles Dodgers and has spent ten years as senior vice president of baseball operations at Major League Baseball.

Ng's new role has opened up opportunities to progress diversity and equality in sports. Commissioner of Baseball, Rob Manfred made a statement made a statement on Friday:

Kim's appointment makes history in all of professional sports and sets a significant example for the millions of women and girls who love baseball and softball. The hard work, leadership, and record of achievement throughout her long career in the National Pastime led to this outcome, and we wish Kim all the best as she begins her career with the Marlins.

Ng also commented on her new role:

I do feel quite a lot of responsibility. I have my entire career. I know that I am quite visible, and I think that has always been a big thing for me: To make my reputation as good as I can make it . . . When Derek told me that I got the job, there was a 10,000-pound weight lifted off of this shoulder, then about a half an hour later, I realized that it had just been transferred to [my other] shoulder.

The Marlins held a virtual conference to welcome Ng, who was introduced by principal owner, Bruce Sherman, and CEO and former Yankees star, Derek Jeter.

The Marlins will be streaming live to introduce their new general manager.