Clark in control of US Open as wind hinders McIlroy and Scheffler

Wyndham Clark has opened a four-shot lead at the halfway stage of the US Open golf championship. Difficult wind conditions troubled high-profile contenders Rory McIlroy and Scottie Scheffler, pushing them further back in the field. England's defending champion Matt Fitzpatrick is among the players closest to Clark heading into the weekend rounds.