A historic 36-hole low at Shinnecock puts Wyndham Clark firmly in the driving seat, leaving Rory McIlroy seven shots back after a brutal back-nine battle.

The USGA set up a different course at Shinnecock Hills to handle strong wind Thursday. When the wind subsided later, Wyndham Clark seemed to play a different U.S. Open.

Rory McIlroy was in a larger group on one under but would have been higher had he not bogeyed his final two holes.