A visibly furious McCarthy was seen yelling at Diaz after the home-plate umpire ruled a trap on a ball the right-hander actually caught in the sixth inning. The decision allowed the go-ahead run to score for the Rangers, though the A's came back and won, 5-4, in the 10th inning.
"Once I actually saw a replay of it and started thinking about it, my thoughts kind of went running," McCarthy said Friday in San Francisco. "It's something I wanted to get off my chest. It's just one of the first times in my career that I've been through something like that. I just wasn't really thrilled with the way I handled it."
So he turned to the Internet and unveiled a blog post entitled "Anger towards umpires and why I feel like an ...." Seven paragraphs followed, among them this one:
"In the future, I think I'm going to start going for the much calmer discussion/debates. Raging can be fun, but nothing gets accomplished. I'm very aware that Laz did what he felt was correct. I don't know how he didn't see me catch that ball, but he says he did and under his job title, I'm obligated to abide by that. He's just doing his job as best as he knows how, and I stood there and screamed and belittled him for it. That's not how I want to carry myself going forward."
McCarthy insists he wasn't seeking validation and, upon waking up Friday morning, said he still agreed with the words written by his sleepless self hours prior.
"I really try as much as possible to not ever think about what happens other than simply executing what I have to do," he said. "I think some of that was just the leverage of the situation, and I think the other part of it was I knew that was probably my last hitter, so I might have just let myself go a little while with it. It wasn't all that bad, but it was enough for me to realize I try to avoid things like that. It's kind of pointless."
So will McCarthy keep up the writing gig? He's not sure yet, saying the post could be his last one, or one of many to come.
Manager Bob Melvin, who was ejected by Diaz after engaging in a yelling match with the umpire, said Friday that Diaz called him after Thursday's game and acknowledged he made the wrong call.
"I give him credit because he called me and said, 'Hey, I made the wrong call there,'" he said. "My respect for him is even more so, because he did make that call."