So he plays golf instead. And plays little pranks on the unsuspecting English teenager, Fitzpatrick, who won the U.S. Amateur last year and will turn pro next week.
On the par-5 fifth hole (the threesome's 14th hole of the day), Mickelson's ball rolled over Fitzpatrick's ball marker and settled in front of it.
"Is that all right there?" said Mickelson.
Fitzpatrick fell for it.
"I'm going to need that moved," he said.
"Don't worry, I'm only joking," said Mickelson, who moved his own mark.
It wasn't "Saturday Night Live" funny, but it wasn't bad. Mickelson and Fitzpatrick could smile about it. On Thursday, Mickelson could smile about a lot of things.