Thread: Gorilla Arm
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Old Fri Aug 03, 2012, 12:31pm
JJ JJ is offline
Veteran College Umpire
Join Date: Jan 2001
Location: IN
Posts: 1,122
The gorilla arm per se is not illegal in OBR, BUT...if the pitcher spins and throws without gaining ground it's a balk. But you knew that.
I only mention it because it was mentioned to me that sometimes a pitcher will have that arm hanging/swinging and the umpire will be so focused on that that he fails to observe the "gaining ground" issue.

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