Derek Holland has issued an apology for doing an insensitive Asian impression on an MLB talk show ... saying, "It's embarrassing what I did."
The San Francisco Giants pitcher went on MLB Network's "Intentional Talk" on Wednesday and brought along Giants staffer Haro Ogawa to be his "hype man."
Yet throughout the interview ... Holland solely used Haro as a prop for the offensive jokes ... including using an Asian accent and several martial arts-style bows.
After the Giants' win over the Mets on Thursday, Holland apologized vehemently for the offensive bit.