On the greens of the lovely Bethpage Black for this weekend's U.S. Open and golf courses across the nation, it's a taboo never spoken about yet easily identified – the yips. Talented, sometimes elite-level golfers, suddenly unable to hold their putter straight for seemingly simple tap-ins. It's like a virus infecting the golfer's mind, causing involuntary reflexes with no warning and no mercy. Cures for the yips are as unknown as its very cause. But two researchers are recruiting the inflicted and hoping that an MRI will shed light on a disease devastating weekend warriors everywhere.