Originally Posted by axel89
oh okay but the other day im in a 10 point tiebreak the other guy clearly calls a ball out when it was in and the usta offical is like that was out
Well, that either means that it was out, or that the player and the official both saw it out. To overrule, it is supposed to be a "clear mistake". Just because you see a ball in from the other side of the net, doesn't mean that the opponent definitely made a clear mistake.