Britons Paul Casey, Justin Rose, Martin Laird and Ian Poulter all made the cut.

BBC: Phil Mickelson misses cut in PGA Tour event at Colonial

Scot Martin Laird is joint leader after carding a 66, also at Kingsbarns.

BBC: Injured Lee Westwood to play on in Dunhill Links

Scotland's Martin Laird completed a solid week with an eagle on the par-five first on his way to a 65 and a 13-under total.

BBC: Zach Johnson beats Brian Davis to Colonial title

Of Montgomerie's fellow Scots, Martin Laird leads the challenge and is also well-placed on four under, one behind McIlroy and Khan, with 10 holes still to play.

BBC: Colin Montgomerie slumps to 83 at USPGA

The Englishman was two shots behind a group of four tied for second, including last weekend's Quail Hollow winner Rickie Fowler, Texas Open champion Ben Curtis, 2007 Masters victor Zach Johnson and Scotland's Martin Laird.

CNN: Family man Kuchar delivers perfect Mother's Day present

Alex Noren of Sweden shared the halfway lead with Molinari and they were still together at the turn, but he dropped shots coming home to fall back into a tie with Mickelson, in a group which also includes American-based Scot Martin Laird and another home hope Peter Whiteford.

CNN: STORY HIGHLIGHTS