How about this scenario:
An opponent hits a ball down the trams and your partner calls the ball out. You have no idea whether it was in from where you're standing, but the guy who hit was looking down the line from the other court and had the best view of it.
He wasn't happy about the call and makes a passive aggressive comment. However, the call stands.
A few points later he calls out a close ball to get revenge.
How do you deal with this?
Prince Warrior Triple Threat MP - Prince Synthetic Gut Original - 59.5 lbs crosses and mains - Wilson Duratac Overgrip