Ever sit down next to an opponent and all he did was carp about his partner. It happens all too often.
Sometime when that happens, try this: the next time his partner misses a shot say “your partner really is having a bad day isn’t he” and the next time say “it just isn’t his day” by this time your opponent will be so mad at his partner he won’t be able to hit the broad side of a barn, but he’ll be convinced it’s his partners fault.

Just remember, at the end of the match get out of there fast, before the fireworks!