I was playing doubles recently when my partner hit a perfect lob over our opponents' net player. The net player backpeddles and when the netplayer realizes he cannot hit an overhead, turns around, and upon seeing the ball bounce, says "out", but then immediatley corrects himself and says "no, it's in...keep playing" and his parnter crosses over and returns the ball that landed right on the baseline. Although I was sitting right at the end and was in perfect position to put away the opponent's ball, I caught the ball at the net and stopped play. I then said I didn't think a player could call a ball out, then change the call, then expect the opponents to continue play. Although I went ahead to told them to play the point over again (which we then lost), I had the feeling that the point should have been ours. What's the correct call?