NEWPORT, Wales (AP) Germany's Marcel Siem shot a 5-under 66 Saturday to take a 3-stroke lead, while Scotland's Stephen Gallacher set a course-record 63 at the Wales Open.
Denmark's Thomas Bjorn (68) and Spain's Gonzalo Fernandez Castano (66) shared second place with an 8-under 205 ahead of the final round at Celtic Manor.
The course record of 65, equaled on the first two days by Chris Wood and Luke Donald, was lowered by Gallacher. The 35-year-old nephew of former European Ryder Cup captain Bernard Gallacher had six birdies and a closing eagle at the 18th hole.
Northern Ireland's Graeme McDowell also broke the old course record by shooting a 64, after birdies at the last two holes.
Gallacher, McDowell and England's Simon Dyson (65) shared fourth place at 7 under.
Siem is looking for his first win on the European Tour since claiming the title at the 2004 Dunhill Championship.
Europe's Ryder Cup captain Colin Montgomerie had a 76, dropping from 14th to 47th place. He walked off the course after his round, declining to talk to reporters.
On Friday, Montgomerie said his performance as captain won't be affected by a newspaper claim that he was unfaithful to his wife.
The Ryder Cup takes place at Celtic Manor in October.