I was playing doubles last night on clay. Partner was rallying from baseline, I was at service line. Opponent hits a ball wide to the doubles sideline near my partner. I glance over and see she is in position to hit, so as the ball bounces I start to turn my attention to the opposing net player, expecting the point to continue. The ball bounces, and as I am starting to focus on the net player, I hear a loud "thwack." My partner calls the ball out. Opponents flip out. "Whoa, are you sure of your call?" "Come *on,* that was right on the line!". My partner says, "Hey, I was right there and I saw it out." Now, I didn't really see the ball well enough to be certain of anything. I wasn't paying close attention, I was farther away, and I was looking across the line rather than down it. But I heard that thwack. Should I have overruled my partner (or more accurately gone up to her and had a conference that the opponents would have interpreted as "doubt") based on the sound of the ball rather than what I did or didn't see? As it was, I just stood there, waiting for the argument to conclude. And as things went, our opponents hooked us back on another call pretty quickly. So I guess we were square . . .