Jordan Spieth and Rory McIlroy both five shots off PGA Championship lead

Jordan Spieth and Rory McIlroy carded contrasting opening rounds of 72 as Spieth aims to become the youngest player to complete a career grand slam in the 99th US PGA Championship.

Spieth's dramatic Open victory at Royal Birkdale means another at Quail Hollow would see him join Gene Sarazen, Ben Hogan, Gary Player, Jack Nicklaus and Tiger Woods in having won all four majors.