Caddies have to be punching bags, psychologists, apologists.

[Zooky]

Just one example.
The punching bag.
Billy Horschel apologizes after throwing a club at caddie | Daily Mail Online

 

[redseat]

he was pissed, threw his club, hit caddie.. He wasn't aiming for caddie....

I will say this though, being a caddie you do get shat on a lot