My feeling is that people don't think they can be aced on a 2nd serve and call good serves out because to them "it must have been out." This happens in every one of my matches. I hit a 2nd serve ace that lands directly ON TOP of the line and then there is a hesitation, then an "out" call. I realize on top of the line is pretty close and hard to call sometimes but my point is that there is no benefit of the doubt on 2nd serves. None. Any others have similar experiences? I'd be interested to know. People, this is discrimination on the basis of service number. There is no equality of service in this day and age. The other possibility is that at my angle and distance I don't have as a good a view of the line.