You cannot change a judgement call. If it were a misinterpretation of baseball rules or a mistake about a particular fields ground rules , it can be appealed but a judgement call cannot be changed. That's why the batter can't argue about balls and strikes with the umpire. Its his jusgement , not a matter of the rules.
That said , it was a raelly bad call i am surprised at how far off he was. Now what could have happened is he could have right there , said he wasn't sure and defer the call to the home plate ump. It happens fairly often. The home plate up , if the first base ump agrees , can change the call but he has to do it right there , not the next day. I am really surprised with so much on the line and the big uproar that he did not defer the call to the home plate ump.
Real shame for the picther though. Very likely he will never have the chance at a perfect game again , a no hitter maybe but a perfect game , probably not.
