Rory McIlroy has got himself under par for his round and is now just four shots off the lead on the second day of the US PGA Championship at Whistling Straits.

After starting on the 10th hole, McIlroy birdied the 16th and is now on 2-under.

David Lingmerth's outright lead was short-lived after he double-bogeyed the 7th and is now back tied for the lead on 6-under with Dustin Johnson.

But McIlroy's biggest pre-tournament rival is right on the World No 1's tail, also on 2-under, partly thanks to this excellent bunker shot:

Jordan Spieth might hole more bunker shots than any player on TOUR. http://t.co/3nPvjePf50

— PGA TOUR (@PGATOUR) August 14, 2015

Padraig Harrington is just above the cut line as he is on 1-over, one shot behind Graeme McDowell.

Shane Lowry, meanwhile, is on 4-over, while Darren Clarke is back on 12-over.