Collision at 1B

[CecilOne]

Originally Posted by RKBUmp

And the rules supplement is direction on how the rule is to be applied. The case play for the rule also indicates the fielder having the ball and waiting to make a tag.

A case play is just an example of one situation when a rule applies.
It is not a universal rule in itself.

The RS says waiting to make a tag; but does not say only then, just that the rule applies to that situation. It also refers to preventing injury, which is just as much a factor in any crash, not just when attempting at tag. It reads like shortsighted visualization to make an unneeded point.

To be truly literal, the fielder was attempting to tag the base.