Wyndham Clark leads the U.S. Open by four strokes, posting a record 36-hole score amidst fierce competition from major champions.

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

The 2023 champion was at six under par after 16 holes when play was suspended, while clubhouse leader Sam Stevens among five at two under