It's not the base runners responsibility to avoid an obstructing defender and you can not determine intent, the only thing a baserunner needs to avoid hitting or being hit by is the ball. Baseruuners head is down and they're full speed to the plate and any defender is standing in the way without possessing the ball, contact is the defenders fault, not the base runners.
If defender has the ball and baserunner trucks them, it's the baserunners fault
If defender does not have the ball and baserunner trucks them, it's the defenders fault
You can’t do that anymore…. Period.
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