Jason Day is grouped with Spieth and McIlroy at Doral. Image: Getty
Jason Day is embarking on an intricate hole-by-hole analysis of the courses he will play this year in a bid to eliminate errors.
Day, who missed the cut in the Farmers Insurance Open in California - where he was defending champion due to a virus, said though, that his game remained solid after a long break.
"After having a few months off it was surprising to me how the game is still there," Day said.
"I wasn't as sharp as I would like to be, but it took me awhile.
"The wedges were the toughest, just like little shots, little half shots that when you're mid-season form you got the touch, you got the speed in the swing, you've got the touch around the greens, kind of stuff like that.
"So I was missing greens from 70 yards out. I mean it was just pretty bad stuff there. You just don't make those. Soft bogeys, three putts you should never three putt, and that. And just missing greens with wedges is one thing that you shouldn't do."
What he discovered led him to install a plan to cut down on his mistakes.
"That's something that I've been trying to work on very hard...knowing I've got to kind of sharpen that part of my game up, make sure that I don't make silly errors and try and go from there.
"My coaches sent me the stats on what holes I need to play good on, what holes I play bad on, how to make a plan of attack to really try and get better at those holes that I've struggled with," he said.
"And from there I can make a game plan, what clubs I need to hit in.
"So when you start, when you're prepping for a tournament it's not just like I'm going out to the golf course and playing golf before the event, or I'm just going to go hit balls on the range.
"You've got to really kind of practise the specific shots you're going to try and hit for that golf course."
Meanwhile, with the Rio de Janeiro Olympics looming, Day maintains his stance that he is planning to compete - but believes the format should be different.
"The only thing that I have a problem with is that it should be a team event, that's the only thing," he said.
"(Currently) it's more of a, just kind of go there and first, second, third, get a medal.
"I think it's obviously special, we need it in the Olympics, I'm looking forward to going down there, but if there was one thing that I would like to do, it's change it to a team format. I think that would be really special to do that.
"It makes it hard for our schedule, but I'm willing to make that sacrifice and go down there with all the other players that are excited about it."
Day said his key rivals Jordan Spieth and Rory McIlroy were also keen to play the Games.
"It's going to be a pretty big deal, the best players in the world trying to compete and play for a gold medal because never in my wildest dreams did I ever think that I would have the chance of becoming an Olympian athlete and I'm not really an athlete…," he said.
"Going down there and competing and playing to try and win a gold medal - at the end of your career it would be neat to look back and go, I played and won a medal at the Olympics when golf was kind of coming back."