This is had to see it senerio so a definitive ruling is out, I'm just asking for the things an ump takes into consideration for a judgement call. Offense takes off on ground ball. Defense infield catches her to far off bag. She tries to return to bag. Throw is coming. Collides with defense at bag right as ball arrives but collision prevents her from reaching the bag. Defense catches throw and tags her short of bag. FU fist out obstruction runner safe. From my view point, runner had partial path to bag and could have made it bag with little or no contact defense did not have ball but was right there 3ft or less to her glove. Plate ump after play just has the look of if appealed would overturn. It was bang bang play. On these type of plays what does the umpires look for to make the call. HSchool