What if player tells you your call was wrong?

[greymule]

Once I didn't see a pitch hit a girl, so I called it a ball. But when I saw her holding her stomach and crying, I sent her to first base. The defensive coach asked whether I actually saw the ball hit her, but I explained that the evidence was obvious, since I didn't believe this 11-year-old was faking. Yes, Freix, by all means reverse a call according to evidence, as the umpires did with Nippy Jones and the shoe polish in the 1957 World Series.