Fowler, who finished tied for second in the 2014 U.S. Open when Martin Kaymer lapped the field, posted a video on his Snapchat account showcasing the extreme speed of Oakmont’s greens.

MORE U.S. OPEN: Pairings, tee times

The greens are expected to remain consistent with the speed seen the last time the Open was hosted by Oakmont. They ran 14 on the Stimpmeter then, when Angel Cabrera won the tournament at 5 over.

A video posted by Golf Digest (@golfdigest) on Jun 12, 2016 at 6:17am PDT

MORE: Mickelson says Oakmont is hardest course he’s played

The winner is expected to be over par again this week.