USA Softball - Interference - Thrown ball

[EricH]

Originally Posted by RKBUmp

Running the bases is not an act of interference. Other than a batter runner between home and first, there is no penalty for a runner hit by a thrown ball unless they commit some act of interference.

You could say the same about a fielder standing in the path of a base runner. He has not committed an ACT of obstruction, but he will be called for it anyway. So give me a better reason. Both definitions (of obstruction and interference) reference an "act." So we cannot hold the fielder to a higher standard than the runner.