I’m with you there, fearsome. Anyone looking for a pitching coach needs to tread carefully. I have the same feeling you do, that this person has indeed bitten off more than he can chew, and he may be heading down a road loaded with pitfalls and potholes.
I was lucky. I had been pitching for a couple of years and was doing all right, self-taught as I was, but at age 16 I was bugged by a nagging curiosity about a pitch called a slider, and it prompted me to play hooky from school one nice September day and go to a Yankees-Indians game. I was hoping that maybe I could ask one of the Yankee pitchers about it, at least get some information about that pitch; and suddenly, without even knowing just how I knew, it hit me that lefthander Eddie Lopat was the one I would need to ask. I caught up with him after the game (which the Yankees won, 2-1), and all I could think of to say to him was "Excuse me, Mr. Lopat—could I ask you something?"
With four quiet words he had me in the palm of his hand, and when I told him I just wanted to ask him something about the slider his response was to draw me away from the mob of fans surrounding the clubhouse, to a clear space in front of the ballpark, and spend some minutes teaching me how to throw a good one. (He had a very good slider.) That led to some 3 1/2 years in which he became my de facto pitching coach, and what I learned from him in that time was nothing short of priceless. He helped me become a better pitcher than I had been before.
And not a sore arm or a sore shoulder or a sore elbow or a sore anything else. In my considered opinion, one could do worse than get advice and assistance from a professional—a major leaguer, perhaps. Just thought I’d let you know a little of my experience with a guy who was not only a top pitcher for the Yankees but also one of the finest pitching coaches anyone could ever hope to work with. Lucky, indeed.