Rory McIlroy’s miserable run of form showed no sign of abating as he shot an opening-round 78 to finish six over par on the first day of the Memorial Tournament in Ohio.

England’s Brian Davis was among those who booked their places at this year’s Open Championship in the American leg of International Final Qualifying in Plano, Texas.

Local boy John Merrick sealed his first PGA Tour win as he edged out Charlie Beljan in a play-off for the Northern Trust Open in Pacific Palisades, Los Angeles.

Andres Romero recorded a blemish-free round to lead the Reno-Tahoe Open after the opening day in Nevada.