Fans should expect to see a different side of Clarke at this year's Ryder Cup, as the 47-year-old gears up for his role as captain of the European team.
Clarke admitted to the UK's Daily Mail that his Obsessive Compulsive Disorder will rear its head at Hazeltine. The 2011 Open champion has already composed three drafts for his opening ceremony speech. His strategies and ideas all have contingency plans. He studies stats weekly, such as how a prospective player is performing on par 3s vs. par 5s.
A member of five Ryder Cup teams, four which came out on top, Clarke knows the history -- and the consequences -- of the competition.
"Fear of failure has been my biggest driving force since I started playing the game," Clarke told the Daily Mail. "That goes right back to my days as an amateur. If I don’t prepare properly, failure is inevitable."
As such, Clarke is not only assessing on-course performance from his players, but also learning more about their characters and personality, trying to figure out how to best reach each individual. He's been collecting inspirational quotes and speeches, hoping to channel that genius to his team.
Despite this preparation, many are assuming Clarke will ultimately select European team stalwarts Lee Westwood and Ian Poulter as wildcard picks. That both are friends of Clarke's make it seem like a foregone conclusion.
Not a chance, says Clarke.
"An old pals’ act? How could I possibly do that?" Clarke asserted. "The Ryder Cup is much, much more important than an old pals’ act. That does not happen. Under no circumstances would I let myself... that’s not going to happen. No chance."
Clarke said that his decisions might cause broken friendships, but it's his responsibility to put together a squad to bring Europe victory.
"There is a ruthless streak to me. Very much so. If you were to analyse successful professional golfers, if they are not ruthless, they are not successful," said Clarke. "You have to put your job and your golf at the forefront of what you are trying to do, otherwise you will never be successful. The ruthless streak: If I think it will be for the best, I have no problem using it."