Obstructed runner contacts defender

[WestMichBlue]

Sit 1: R1 coming home, F2 blocking the plate, play goes to 3B. F2, watching play, fails to move and R1 knocks her down in attempt to reach plate. (Not flagrant or malicious.)

Sit 2: F4 is set in baseline; R1 is stealing and runs into F4.

In both cases, we signal obstruction. But then what? Both ASA Crash Rule and NFHS slide or avoid illegal contact discuss a defender in the act of making a play on the runner. That is not true in my situations.

Can you give me a rule, interpretation, or case play in either code to support calling the runner out? If not, when do the basepaths become shooting galleries?


WMB