Rory McIlroy falters after strong start as Aaron Rai leads at Wentworth

Rory McIlroy made a strong start at the BMW PGA Championship at Wentworth, reaching five under par through 10 holes, but dropped three bogeys on the back nine. Aaron Rai took advantage of McIlroy's late stumble to claim the top of the leaderboard. The tournament is being played at Wentworth's West Course.