By Larry King TROON, Scotland (Reuters) - Danny Willett comes to Royal Troon as both a major championship winner and as a contender for last year's British Open championship, and that is not a coincidence. Willet was within a shot of the lead in the second round of the Open at St Andrews. He fell back a bit in the third round, but he was still doing well enough to be paired with Zach Johnson, the eventual winner, in the final round, and watching Johnson was instructive. "The one thing that's impressive about Zach is Zach never changes the game plan for anyone, any golf course. ... More...