Zach Johnson was the one totally in control of his shotmaking and emotions. He gave absolutely no quarter in that final round.
I think Tiger's aura of invincibility has evaporated, both in his own mind and those of his opponents. He still has never come from behind on the final day to win a major, and I think the odds for it happening are getting longer all the time.
Once again, an opponent, Cabrera, got it done, although he gave up a lot more openings to the field than Johnson did in the Masters.
Tiger had his chances; he didn't take advantage of them...