Out or Safe?
 

DeJesus is out after collision

Apply this play to ASA / NFHS / NCAA. Rule references, please.

If, as it looked, the runner was knocked off the base by the fielder, that would be OBS and award runner 2nd.
No time to look up rule cites. :(

If the ump judged the runner was off because of his own momentum, out ok.

Can you have OBS WITH possession of the ball?

No (but you knew that ;)).

It was rather rhetorical. ;)

I'd have a hard time calling a runner out on a play like that. Runner had the base and the only reason he lost contact with it was because he was physically knocked off it.

I understand your point and basically agree.

But, to play devil's advocate a little bit, should his pop-up slide be considered and allow the out to stand?

Just wondering, ....
Runner coming into second, F6 has the ball and is setup to make the easy tag..... Runner slides in (legally) and during the collision, ball is dislodged from fielder's posession.
Safe or out?

Copy and paste of what I posted on the SMSUA facebook page:

Looks ugly...both players are trying to make a play...no obstruction or interference. I think I just have a train wreck and go with the out. I'm open to being convinced otherwise, though.

Safe. No rule reference because it's not in the book. Allow me to posit a similar play and ask for your rule reference on it. Runner comes into second with a stand up double. Short stop takes the relay throw, runs up to the runner, bear hugs the runner and gently deposits her three feet off the base while tagging her.
It's not obstruction and there's no rule against it but the defense can't push a runner off a base to get an out.

safe

So, Hugo, correct me if I'm wrong.

Your point is that it is OK for the offense to cause the ball to dislodge by doing nothing more than running but it isn't OK for the defense to dislodge a runner from the base doing nothing more than attempting to make a tag?

What Pop-up slide?
 

What pop-up slide? You mean the one he attempted but couldn't complete because he was knocked off the bag? That pop-up slide? :)

Safe at second!

Speaking ASA

IMJ, this is not a collision which was inherently caused by the lay-out of the field and manner in which the game is played. I would consult with the PU and utilize 10.1 to rule the runner safe.

AFA the clip, you need to remember the league in which this occurred. And the TH was wrong, it was not a late slide, it was a well executed pop-up.

I find it hard to accept that in a collision the runner must keep in contact with the base as his gained position is displaced. (this is what occurred in the video at 13 seconds. runner's foot touches the bag immediately followed by a tag on his lower shin followed by a collision that removed him from the base and altered his attained position).

I would not have an out at this time.