Up and down round sees Rory McIlroy slip down US PGA leaderboard

Rory McIlroy began his second round with a moment of magic, but even a late rally saw him end it 10 shots off the lead in the 99th US PGA Championship.

McIlroy was in danger of missing the halfway cut for the fourth time in his last seven major appearances after dropping four shots in the space of five holes at Quail Hollow.