Originally Posted by SwankPeRFection
Which is what I said. The partners must agree to a call. If you don't disagree, then you agree by definition.
This is just not true. There is absolutely no requirement in tennis that the partners have to agree on the call. Only that if they disagree or are unsure, then the point must be awarded to the opponent.
You have four options when making calls ... I saw it in, I saw it out, I saw it but I am unsure, or I did not see it.
If you saw the ball hit but are still unsure then point to your opponent, regardless of what your partner thinks.
If you and your partner both make a call and disagree, point to the opponents.
However, if you did not see the ball hit and your partner calls it out ... then there is no requirement to give the point to your opponent.