The on-site forecast calls for winds 15-25 mph out the west until noon, shifting to WNW at midday and letting up a bit around 4 pm CT.
Already we've seen that Erin Hills will play as a much different course, with greens noticeably faster and one hole location (13th) moved.
The flag on the 18th hole will pay tribute to Arnold Palmer, as shown in this Facebook live of the pin placement. There is also a change to the grandstand canvas featuring a Palmer tribute. All players and spectators are receiving a replica pin of his 1960 contestant badge. So cool!
I'll add the course setup notes of note when we receive them.
Golfweek's staff made picks. I went with Rickie, because I know you were dying to find out.
Day four links...
USOpen.com has live featured group and hole coverage early in the day.