McIlroy leads US PGA by one shot going into final round

                             

Rory McIlroy maintained a one-shot advantage on day three of the US PGA Championship, despite struggling to find his imperious best at Valhalla.

The world number one shot a four-under-par 67 to lead on 13 under par, one clear of Austrian Bernd Wiesberger going into the final day. "It's not the biggest lead I've ever had but I am still in control of this tournament," McIlroy said. The 25-year-old has climbed back to number one in the world rankings after successive wins at the Open Championship and last week's World Golf Championship event in Ohio.