The walk in the park with the first two holes is about to end. This par 3, which most people considered at one point as being pretty easy, has now grown to a full fledge U.S. Open hole.
It plays across a small valley and the right side of the green permits a shot, which does not reach the green to bounce up. Behind the green, however, the land falls quickly into the trees, and so the player had best hit it in the direction he aims it, because there is quite a distance difference between hitting toward the left side of the green and hitting it toward the right. The bunkers on the left usually catch shots hit left, preventing them from finding the real trouble towards the fourth tee.
Back in the opposite direction to the 2nd fairway, the wind is often in the player's face, and, when it is, the combination of the trees behind the green hiding the wind and the flag set on the extreme right of the green, plays games with the wind.