Tiger Woods' former caddie, Steve Williams, was well-known for confronting fans when his man was doing his thing.
It appears as though that particular trait has passed to the former world No.1's current looper, Joe LaCava.
During Woods' final group stage match with Patrick Cantlay today at the WGC-Dell Technologies Match Play, LaCava was caught by cameras reacting angrily to a supporter standing close to him.
It's not clear what exactly the fan did to irk Tiger's man but, whatever it was, LaCava didn't like it.
Check out the footage below.
Judging by his reaction, the supporter clearly agrees that he's done something wrong. However, it will be interesting to see what action - if any - the tour takes against LaCava.