The 29-year-old last year became the first English Masters champion since Sir Nick Faldo bagged the last of his three green jackets in 1996.
As defending champion, Willett gets to decide what he and his fellow green jacket winners will eat at their traditional gathering ahead of the Masters.
"I'm not going to be thinking about winning the tournament until Sunday, or the back nine on Sunday", Couples said. He said that over the a year ago he's noticed how becoming a major champion has made him a little more impatient.
Willett was the 89th and last player to register for the Masters past year, only arriving on the Monday evening after spending time with his wife Nicole following the birth of their first child days earlier.
"It's been a tricky 12 months and we haven't played great golf, but by the same token if you look at the career we've had, we've not really had a slump in form in two years, " Willett said. Fowler hit four birdies and an eagle to just one bogey to move up for a share of the leader board. "He's always going to be a Masters champion and can sit back knowing that he has a tee time at Augusta National as long as he's still walking".
After taking a month off after Augusta, Willett struggled at his first tournament back, missing the cut at The Players Championship. The 21-year-old Korean, who is already a three-time victor in his blossoming career, finished third on the Asian Tour's Order of Merit last season.
This season, Willett has finished 69 and 75 and missed the cut in three PGA Tour events and placed 54 and missed the cut in two European Tour events.
If Willett does miss the cut, he'll be cursing his performance on his first and last holes of the day. We're on the first tee on Thursday morning, and there's millions of people watching, and if you don't hit it good, a million people see you hit it poorly, and it's not nice. When is the last time a golfer was ever jealous of a sportswriter? "And then when you actually drive down Magnolia Lane and you park in the auto park and go put your shoes on, obviously it's going to be different. There's a few men that have been able to do it over the years, but they are few and far between".
After finishing 12th here in 2012 the 37-year-old claimed he was not good enough to win a major, but said on Friday: "'I was frustrated then but I probably didn't accept things as well as I should have, " he said.
What is neat about the week leading up to today's first round are the practice rounds and the sights and sounds inside of Augusta National Golf Club.