The 3 key holes to unlocking Chambers Bay

No 9 "Olympus", 224-yard par three

The 246-yard 15th, home to the only tree on the course - a Douglas Fir - may be longer but at least it has only one tee box. Olympus has two, one high up, offering the most severe downhill shot in US Open history, the other low down and built at the request of the USGA to give it the ability to mix things up and play the hole uphill.

The drama is likely to come from the former with a severe 100-foot drop from tee to hole and views out over Puget Sound set to make spectacular viewing.