By Tony Jimenez TROON, Scotland (Reuters) - The last six British Opens held at Royal Troon have been won by Americans and Dustin Johnson, the hottest player in golf, looks like he has all the credentials to send the U.S. into seventh heaven this week. Johnson has finished in the top 14 in four of his seven trips to the British Open and came within a whisker of landing the coveted Claret Jug in 2011 when he wound up in a tie for second place behind Northern Ireland's Darren Clarke. "He has a lot of spotlight on him this week because he has won the last two events he's played and they've been pretty big events," world number one Jason Day told reporters on the windswept Ayrshire coastline.
