We can't be certain Dustin Johnson was the kid that did his homework on the bus to school, but judging by his comments on the major revision of golf's rulebook in Hawaii last week, there's a strong possibility.
The current World No.3 was quizzed by the media at the Tournament of Champions as to whether he and his caddie (and brother) Austin had paid any attention to the new rules and their thoughts on the changes. DJ didn't let them down with his response.
"I actually just looked at it for like a minute upstairs before I came down," said Johnson, who went on to finish tied fourth at Kapalua. "They've got a big poster in the locker room."
Here's the said poster...
Posted on the wall in the locker room at @GolfatKapalua for @Sentry_TOC participants. Handy review of new #RulesofGolf. Love the grade school review of "areas of the golf course" and how water hazards now known as penalty areas. I think guys can figure this out on their own. pic.twitter.com/eXDJjPT6uD— Dave Shedloski (@DaveShedloski) January 1, 2019
Then there was a follow-up question aimed at his caddie, Austin.
"I had one of the Tour officials do a printout that I'm going to give to him to study later on," said Dustin
"It probably won't go very well, but I'm going to have a look at it a little bit."
To be fair to the Johnson brothers, they didn't exactly get much time to take a look at the new rules what with Austin's wedding and a number of luxurious cruises to attend to over the off-season.
Johnson may have wished to have paid more attention to the rule book as he fell foul of the first two-stroke penalty of 2019 on the PGA Tour when playing a wrong ball from a penalty area during the second round.
One of the course marshals pointed out to Johnson as to where he thought his tee shot had ended up, and without identifying the ball himself, Johnson soon realised he had played the wrong ball after walking past his own ball that was 10 yards up in front.