MLB Announcer Jessica Mendoza -- I've Tuned Out Hateful Radio Host ... He's Not Worth My Time

Jessica Mendoza -- the 1st woman to announce an MLB playoff game -- says she's well aware of the radio host who attacked her Tuesday night -- but says he's "ignorant" and not worth her time.

TMZ Sports spoke with the Olympic softball legend who says she expected to have some haters when she broke the gender barrier by calling the Yankees vs. Astros game ... and tried her best to mentally prepare.

"When I did my first game on August 24th, I remember prepping myself. I remember saying, 'No woman's been in the booth. They're going to attack you.'"

Enter radio host Mike Bell, who's been suspended by his station after referring to Mendoza as "Tits McGhee" on Twitter and essentially saying a softball player has no business calling a MLB game.

"I had someone send me the link," Mendoza says ... "Just before I clicked on it, I said to myself, 'I don't want to open it. If I do, he wins.' I didn't want to give it my time, because if his objective was to get to me, I didn't want to give him that."

"At the end of the day, I don't care about the ignorant people. It's one thing if he attacks me because he didn't like the job I did. That I can understand."