Okay, so today I wanted to figure out what this “dead arm” thing in baseball is all about. I’ve heard the term tossed around, but I never really understood it. Time to get to the bottom of it!
My Investigation Begins
First, I started by just observing. I watched a bunch of baseball games, both live and recordings, paying close attention to the pitchers. I looked for any signs of fatigue, changes in their throwing motion, or anything that seemed “off.” I didn’t see anything super obvious right away, but I did notice that some pitchers seemed to lose a bit of zip on their fastball as the game went on.
Then, I needed to try by my self,I grabbed my old glove and a baseball, and headed out to the park. I’m no pro, far from it, but I can throw a decent ball.

I started throwing, trying to mimic what I’d seen the pros do. I focused on throwing as hard as I could for a while, to really get a feel for the mechanics involved,Then i tried to throwing fast-ball as hard as i can.
The Feeling of “Dead Arm” (Maybe?)
After a good amount of throwing , my arm definitely started to feel tired. It wasn’t painful, exactly, but it felt heavy, and it was harder to get the same speed on the ball. It felt like my arm had less “pop.” Is this what they mean by “dead arm?” It’s like, my brain wanted to throw hard, but my arm just wouldn’t fully cooperate. I tried to push through it, but it felt sluggish and unresponsive.
Here’s what I noticed specifically:
- My throws became less accurate.
- The ball felt heavier.
- It took more effort to get the same (or less) velocity.
- My arm simply felt “heavy” or tired.
Putting It All Together
So, combining my little experiment with what I saw , I think I have a better grasp of what “dead arm” means. It’s not necessarily a sharp pain, but more of a general fatigue and heaviness in the throwing arm that makes it harder to throw with the same velocity and control. And you just feel tired in arm. I think i get it.