Three wrongs don't make a right

[Duke]

You can un-ring a fair ball call. Actually had this happen last year in a HS game. I was on the line at first base. A little flare just over the first base bag that clearly hit foul just in back of the bag. My plate ump indicated fair. Runner kind of slowed going to first and most of the fielders stopped on the play. After the runner got to first, my plate ump figured he may have missed the call based on the actions of the players and myself. He was blocked out by the runner and first base player. He consulted with me and we overturned the fair call to foul.