Looking like a matinee idol from a bygone era, Ryan Moore sauntered into the third-round lead at the BMW Championship on Saturday, shooting a breezy 66 for an 8-under-par total of 205, one stroke better than three players: Dustin Johnson (68), Charlie Wi (70) and Matt Kuchar (70). The shakeup Moore caused at the top, and some jostling in the middle of the field, set up some fascinating possibilities for a wild Sunday finish at Cog Hill Golf and Country Club. Players on the brink of elimination will be trying to get into the top 30 in points to secure a spot in the Tour Championship in two weeks, and those near the top will be shooting to control their own title hopes in a bid to win the FedEx Cup. Moore, 28, said he was concerned about one thing only. 'I'm here to win the Western Open,' he said, calling the PGA Tour's third-oldest event by its former title. One would have to go back deep into the event's past to find a potential champion attired the way Moore was on a gray, rainy Saturday. Sporting some stylish stubble, a sweater vest and a necktie, Moore looked like a latter-day Bobby Jones in need of a shave, but he earned style points for his modified throwback outfit and substance points for sending iron shots closer to the hole than anyone else in the field. Four of Moore's six putts for birdie were from inside 8 feet. Only Zach Johnson matched Moore's 66 for low round of the day, and he moved up eight spots into the top nine, four strokes back. That is the type of move Tiger Woods will need Sunday -- as well as some help from those above him -- if he is to have any hope of making the Tour Championship on Sept. 23-26 in Atlanta. Woods, who shot 68 to move up 18 spots into a tie for 22nd, was projected to finish outside the top 30 if he were to tread water Sunday. If he does fail to make the field for Atlanta, it will be the first time since 1996, his first year on tour, that he does not qualify. Woods will be paired with Phil Mickelson (70) in a battle of the two top-ranked golfers in the world. Mickelson has beaten Woods five of the last seven times they have played together. None of this means anything to Woods, who believes he is making strides with his game and who is focused on what he always focuses on going into Sunday. 'I'm trying to win this golf tournament,' he said. 'And right now I'm eight back. That's always the focus.' For Woods to win, he will almost certainly have to better his lowest round of the year -- a 65 at the Barclays -- by three or four strokes. 'As of now, it looks like probably 61, 62 might have to be the number,' Woods said. 'It depends what the guys do on the back nine. Guys aren't running away with the tournament. The greens are not good enough to do that. So we'll see what happens.' There will be plenty to see. Dustin Johnson has positioned himself for a shot at victory, the second time he has done so since shooting 82 in the last round of the U.S. Open. Since then, Johnson has struggled in the fourth round, shooting over par in each of the five final rounds he has played, including his 73 at the PGA Championship, where he incurred a two-stroke penalty for grounding his club in a bunker at the 72nd hole. Ernie Els, who is tied for seventh, has a shot to reclaim the top spot in the FedEx Cup points, a position he held until three weeks ago when Kuchar snatched it away with a win at the Barclays. And there is the opportunity for Kuchar, slowed by illness the past two days, to claim his second playoff victory after having had the lead or a share of it for the first two rounds. 'By the way it's going,' Kuchar said, 'I'm hoping it continues on this track.' 