The knock on Dustin Johnson was that he didn't have what it takes between the ears to close out a major.
He looked as though he didn't care, perhaps because a crushing loss didn't appear to bother him as much as it should have. And in some corners, there was chatter that he needed to get someone other than his brother to be his caddie.
Now those are some of the reasons why Johnson is No. 1 in the world, and why he is such a strong favorite to win the Masters.
"He knows he can handle whatever gets in his way," said Claude Harmon III, the swing coach who spends the most time at work with Johnson. "Now players feel like if he's on the leaderboard, they...