A look at the key hole Friday in the second round of the British Open:
YARDAGE: 458 yards.
STROKE AVERAGE: 4.05.
KEY FACT: Rory McIlroy hit driver 396 yards and pitched to 8 feet for birdie. Dustin Johnson hit driver an estimated 406 yards and made birdie. Tiger Woods hit his driver out of bounds to the right. He hit the next shot left near the 16th fairway and made triple bogey, putting him below the cut line.