morgan wrote:One from this weekend, ASA rules, 0 out, runner on 1. Bouncer to F6 near 2nd base, F6 fields ball, two steps, steps on base, and starts to throw to 1st. Her momentum has taken her toward 1st and as she throws, (depending on your point of view) runs into or is run into by R1, who did nothing to avoid contact. The contact was not malicious, but (I felt) affected the outcome of the play (safe at 1 on a bang-bang play).
I went out to ask about an already-out runner interfering with a fielder making a throw, and heard the ump say things like "the runner can go straight into the base" and "the shortstop has to go to one side or the other". Really? So should we be teaching the girls the old baseball roll-block?
Try this thought process:
If the runner is close enough to the defensive player at the base to make contact, then the play was close enough for the runner to still be trying to beat out the play. Runners don't just go 'poof' (credit to MTR) instantaneously when put out, nor can they or should they be expected to run the bases as if they know they will be out. That would include giving up or veering off.
That said, the next issue is if the runner acted in a manner consistent with trying to beat the play (which may include sliding, but doesn't require it; the runner can legitimately attempt to beat the play standing), or in a manner solely designed to hinder the fielder. If the former, no call; if the latter, that is an "act" of interference. Unfortunately for you, only the umpires' judgment counts.