The other day, I am playing doubles with some random folks as part of the regular club session. During a match, the opponent hits a deep shot over my head and my partner goes to get it (he was by the baseline), as he is moving backwards and hits the shot (which went into the net), he calls it out. But the ball was in (probably by a foot, I could see the green court color between the ball and the line when it bounced), and I called in. The opponent by the net also said it was in. I told my partner that the ball was in and it is their point. I thought that would be it, but he was not happy about it. He grumbled about the call for a couple of games. What would you do in this situation? Would correct your partner? What is the best way to correct a call like this?