I am having some trouble with line call on my own service returns. When I am receiving serve, I expect to call the service box sidelines, and I expect my partner to call the serves that are deep. If the serve is headed straight up the middle, I forget about calling the serve out and instead concentrate on hitting a good return because I know my partner will call it if it is deep. I don't like it much if my partner routinely calls the center line and I really *really* don't like it if they call the far line. If those balls are close, I have the better angle and should make the call. If those balls are way out, we will likely both see it out. I think calling the "wrong" lines looks suspicious and opponents will start wondering whether they are being hooked if we are calling balls when looking across lines rather than down them. When my partner is receiving, I tend to be very conservative and I only call those lines when my partner needs help. If she call it in and I saw it out, I will defer to her call and won't say anything. The problem I am having is two-fold. The serve will come up the middle of the box, and to me it looks like it may be going deep, but not deep enough for me to make the call. I will focus my attention on making a good return. Partner will say nothing, I will play the return. After the point, partner will come up and say, "That serve was deep; I should have called it." On another occasion in the same match, the serve up the T had sidespin and I was receiving in the deuce court. I saw it on the center line (or too close to call out) and played it. My partner said nothing. After the point, she came up, indicated a spot 1 foot on the wrong side of the T, and said that the serve had been out. I think it impossible that the serve could have been a foot wide and I would have missed it. But if it was really a foot out, why didn't my partner call it out? All of this is frustrating. I don't have this with other partners. The serve comes, a line call is or is not made, and we carry on. I'm getting to the point where I think it might be better for me to just call my own service lines. Trouble is, I think this would be bad for interpersonal relations. I can't even imagine how that conversation would go. Has anyone ever dealt with this before?