Played doubles with a new partner. She was serving. Opponent's flat groundstroke goes deep and wide to my partner. It was a good shot; partner is toward the middle of the court and can't reach it because of the angle. I turn to look. I see it on the doubles sideline and I give the hand signal for good. She calls it out. I tell her we have to give them the point because we disagree. We give them the point. This happened twice more in that same (long) service game. Which made me wonder if I was doing the wrong thing. After all, she is in a much better position to make the call than I am, as I am looking backward and across the line rather than down it. Then again, I genuinely saw the balls as in. Not on the outside of the line, right on the line. But it is her call to make, yet here I am overruling her from an inferior position on the court. I have seen net players call the deep sidelines and baselines when their partners are better positioned to see the ball, but usually these net players are calling balls out rather than calling them in. As an opponent, I feel these calls by the net player are highly suspect, and more often than not the call goes against us. So how do the rest of you handle this? If you are the net player, do you just let your partner call those deep and wide balls as out even if you think she might be wrong on the theory that it is her call to make? Should I be keeping my hand signals to myself until the two of us have talked it over?