(CNN) -- South Africa's Thomas Aiken fired a second round seven-under-par 64 to take the clubhouse lead at the European Masters at Crans-Sur-Sierre, Switzerland, on Friday.
Thomas Aiken leads the European Masters by a shot after carding a second round seven-under 64.
However, Bradley Dredge of Wales, whose last Tour victory came here in 2006, is only one stroke behind thanks to a 65, to put him nine-under-par for the tournament.
Aiken's round took him to ten-under-par, but overnight leaders Brett Rumford and Simon Dyson both slipped off the pace.
Australian Rumford, who played the last 13 holes in 11-under for a first round 62, dropped four strokes in his first five holes but recovered to seven-under-par.
Englishman Dyson, one behind overnight, had two bogeys in his first four holes, came back with four birdies, but then finished bogey-bogey for a level par 71.
Dyson, the winner of the Dutch Open last month, was in third place on eight-under-par alongside Ireland's Paul McGinley and Angelo Que of the Philippines.
Thai Chapchai Nirat, a member of both the Asian Tour and The European Tour who are co-sanctioning an event in Europe for the first time, is a shot further back.