US Open golf: Wyndham Clark holds halfway lead as Rory McIlroy slips back after rollercoaster round at Shinnecock Hills

Wyndham Clark holds a four-shot lead at the halfway stage of the US Open at Shinnecock Hills, after completing his fog-delayed first round of 64 and following it with a one-under 69. He leads Xander Schauffele, Matt Fitzpatrick, and Sam Stevens, who are tied for second place. Rory McIlroy, who is chasing a second major of the season, sits seven shots back after a rollercoaster second round.