A look at the key hole in the first round of the British Open:

HOLE: 17

YARDAGE: 495

PAR: 4

STROKE AVERAGE: 4.83

RANK: 1

KEY FACT: The Road Hole was by far the toughest hole on the Old Course, playing closer to a par 5 than a par 4. No one made a birdie on the hole, but Dustin Johnson was one of 53 players who managed to make par on his way to the first-round lead.