Obstruction?

[steveshane67]

Originally Posted by mbyron

This criterion is not part of the rule or its usual interpretation. The rule uses language like "hinders the runner in his attempt to run the bases," and running the bases does not always mean advancing to the next base.

For example: R2, batter singles. R2 is obstructed by F5 rounding third, falls down, and returns to 3B. This is textbook OBS, and the runner must be awarded home.

I understand if the runner falls down OBS would be called, but Ive never seen a base awarded when the runner and the fielder "merely bump shoulders" or similar "incidental contact", which seems to be the situation described by the OP and was the situation I was trying to imply in my post.