After a stirring Masters victory by one of the game 's greats , Phil Mickelson , players with substandard Q ratings have taken the U.S. Open ( Graeme McDowell ) .
Now , after lapping the field at St. Andrews , it 's Louis Oosthuizen at the Open Championship .
After a stirring Masters victory by one of the game 's greats , Phil Mickelson , players with substandard Q ratings have taken the U.S. Open ( Graeme McDowell ) and now , after lapping the field at St. Andrews , it 's Louis Oosthuizen at the Open Championship .