Pitching is a mix btw science and artistry. This fat fukk didn't look like an athlete but damn he could pitch even into his 40s
I've said this before but for those of us who remember young Bartolo Colon, this guy used to throw straight heat. Mid-upper 90s fastballs.
At the end of his career, Colon was almost entirely a fastball pitcher. It shows up in pitch splits as Fastballs and Sinkers. But a fastball and sinker is more or less the same pitch. He just got way more movement with the sinker. (but the loss in speed with a sinker wasn't significant enough to classify it as a breaking ball).
And that's largely what it takes to be a successful pitcher. Throw strikes. Change speeds.
As they say: hitting is timing. Pitching is disrupting timing.
There's a viral video clip out there of Greg Maddux talking about how he needed to learn how to pitch slow. He already knew how to pitch fast.
This is why relievers are almost always guys who throw hard, but never learned how to pitch slow. They almost all throw fastballs and sliders. They never developed that 3rd pitch to disrupt a hitter's balance. You can throw 100mph and it's gonna get hit. Ask Armando Benitez.
The very best relievers, not surprisingly, are the ones who had great offspeed pitches. Trevor Hoffman with his change-up, for example.
Now I'm not saying every pitcher should be like Bartolo Colon and throw sinker/fastball all day long. But a lot of guys could learn from him.