Anytime I'm playing singles and have a clearer look down the line, I'll call a miss.
USTA dubs match recently, my partner called a second serve to him out, which would have given us the break and a chance to serve for the match, I corrected it good, they went on to hold.
If I see it, I call it. If it's close and I'm unsure I go in my opponents favor as it should be.
If I'm going to win, I'm going to win on my merit, not my calls.
Boris Becker Melbourne
"To resist despair in this world is what it is to be free"