American Jason Dufner, who is chasing his first USPGA title, extended his lead to two shots Saturday after firing a five-under 67 in the third round of the Zurich Classic.
Dufner moved to 17-under par 199, two strokes ahead of Canadian Graham DeLaet who soared into contention with a six-under 66 for 201 at the TPC Louisiana.
Dufner is looking for his first win in 163 starts. He has led after 54 holes two times previously but failed to earn a victory both times.
He led the 2011 PGA Championship before losing in a playoff and tied for third at the 2009 Canadian Open after leading at the end of three rounds.
DeLaet shot his lowest round since firing a 63 in the opening round of the Sony Open. Before the Sony, he sat out half a year while recovering from back surgery.
Ryan Palmer tied the course record with a 64, becoming the third player to shoot the score this week.
Masters winner and defending champion Bubba Watson also rocketted up the leaderboard with a seven-under 65. Watson, who made the cut by one stroke on Friday, has a share of 16th place at nine-under.
Source: AFP American Edition