( CNN) It’s a long time course in US Open history and was said to favor the big hitters but Erin Hills claimed the scalp of the three best players in the world Friday.

Defending champion Dustin Johnson, world No. 2 Rory McIlroy and third-ranked Jason Day all made early exits as Americans Brian Harman and Brooks Koepka and Englishmen Paul Casey and Tommy Fleetwood contributed the field at halfway in Wisconsin.

The quartet largely avoided the deep fescue and took advantage of rain-softened greens to push the leading rating to seven under as golf’s top trio fell the wrong side of the cut, which arrived at one over.

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