He's struggling to say some words and sometimes talks a bit sluggish.
In a recent interview, the 66 year-old sportscaster opened up on his situation:
"The way I see it, two things work to my disadvantage. The game is speeding up all the time. And I'm slowing down all the time."
"I did not have some kind of accident. I do not have cancer. I don't have dementia. I haven't had a stroke. All of that's been confirmed by Mass. General neurology.
"They've done tests that seem like I'm going through some sort of science-fiction scene, but it's really true. The images of my brain literally reveal nothing. That's my joke with them."
"It doesn't fit in any slot. There have been a couple of guesses, but they haven't made a definitive diagnosis and they've been working on me for a year and a half. It's very frustrating, as you can imagine, for me to have this slowdown in my speech."
"I thank all the people who are working on this problem and helping me, and they seem to feel and I anecdotally feel that I'm making incremental progress. The brain is a funny thing, especially mine. It is still possible to train a 66½-year-old brain to do the same things you used to do in a different way. And that's what we're working on through speech therapy."