Johnson had won his last three tournaments and was the betting favorite at the Masters.
Winkle on Tuesday said Johnson was in "as good a shape as I've ever seen him in every aspect of his game and his life".
Johnson became only the fourth world number one to miss a major championship, the first since Rory McIlroy withdrew from the 2015 British Open.
Struggling with his ball-striking for the first three months of 2017, 36-year-old Scott opened his 2017 Masters with a bogey at the hard par-4 first hole.
AUGUSTA, Ga. (AP) Same result, different day.
For the second straight round at the Masters, Jordan Spieth had a quadruple bogey on the back nine.
This time out, he negotiated the 12th hole in regulation but took a nine on the par-5 15th, ballooning his score before sinking a birdie at 16 to limit the damage to finish on 3-over 75. "So I didn't take my medicine, and hit it about 15 feet right with a club that takes the spin off", Spieth said. The fact remains though the last ten Masters champions have all been in the top ten after the first round and Spieth is well adrift of that. "It really isn't", said Spieth.
US tells companies not to overlook qualified Americans
The warning marked a major break with the Obama and Bush administrations - though less than some analysts had hoped for. Companies that rely heavily on H-1B workers will shoot up the priority list for audits, USCIS said.
"I was stuck in the '15th-is-a-birdie-hole mentality, ' and it kind of bit me a little bit", he said.
"I was making some swings on the range, I could go max about 80 percent and it's still just so tight, it just wouldn't let me". On the sloping seventh green, Watson tried four times to putt his ball well past the hole to the green's peak, hoping to watch it slide back down into the cup.
Willett, who has struggled for consistent form since claiming his first major title 12 months ago, hit a wild opening drive into the trees to the right of the first fairway and needed two shots to escape.
Caleb ate with his father in the champions locker room before the par-3 event. Plenty of the fans crowded around no doubt remembered how he'd dug himself a watery grave only a year earlier. I landed on my left side. "I want to play".
Then along came No. 15. Unfortunately for him and after a freakish set of circumstances, though, he won't take the course.
So tough was Augusta National in gusts that approached 40 miles per hour that Hoffman and McGirt were the only players who broke 70.
Phil Mickelson revelled in a return to familiar territory as he shot a one-under-par 71 on the opening day at the Masters and then declared: "I love it around here". "I was in Jack's home for weeks, and Arnold was in my home and Jack visited my farm time and time again".