Golf:England's Justin Rose tamed the tough Aronimink course with a commanding display to earn a four-shot going into today's final round of the AT&T National.
Rose, who made just one bogey in a three-under-par round of 67 in bone-dry afternoon heat, moved within sight of his second victory in three starts by leading on 10-under 200.
"Today was a really good round in a lot of ways," said Rose after his third round.
Burly Swede Carl Pettersson shot the day's best score (65) to move into a tie for second with South Korea's Charlie Wi (70) on six-under, while Tiger Woods's title defence is all but over after the American fell 13 shots off the pace after a lacklustre 70.
Rose, the form player in recent weeks, has some demons to contend with having surrendered a three-shot lead going into the final round in Hartford last week.
That scuppered his bid for two wins in two starts after he won the Memorial last month, his first PGA Tour victory.
"My game wasn't that good at Hartford," he said. "I feel a lot more comfortable with more aspects of my game this week.
"The challenge is to be as loose as possible. I'm more excited to put into play the lessons I learnt at Hartford. What I'm doing well is not carrying any baggage over from one week to the next."
Pettersson was pleased to be in contention. "I putted well but that's what you've got to do around here," he said. "I missed quite a few greens on the front but on the back I played more solid."
Wi spoke about the possibility of his maiden victory on the PGA Tour.
"I've won numerous times overseas but still the PGA is the toughest tour in the world," he said. "You give yourself enough chances and you'll break through."
Woods recovered from a poor start - three early bogeys - and was upbeat after his round.
"I turned it around starting at (the eighth hole). From then on I hit some really good shots," said the world number one.