By Steve Keating

LEMONT, Illinois (Reuters) - Sporting a retro shirt and tie ensemble on Saturday, Ryan Moore was dressed for success and his golf was equally sharp as a five-under 66 earned a one-shot lead after the BMW Championship third round.

Moore, whose classic attire drew lots of attention, evoked memories of former greats like Bobby Jones when six birdies and one bogey gave him an eight-under total of 205 on a soggy day at the Cog Hill Golf and Country Club.

"I love the old classic golf look and I'm a little disappointed that it's gone away," Moore told reporters. "It's just my little effort to bring that look back a little bit and kind of let people see today what it used to look like.

Lurking one shot back are U.S. Ryder Cup pair Matt Kuchar (70) and Dustin Johnson (68) and South Korea's Charlie Wi (70), who is chasing his first PGA Tour win.

Britons Ian Poulter (69) and Paul Casey (69) were one shot further adrift on 207 in the third event of the season-ending FedExCup playoffs.

Moore arrived at Cog Hill occupying the 58th spot on the FedExCup points standing and had planned an early vacation thinking he had little chance of qualifying for the elite 30-man field.

But with a win or a top four finish on Sunday, Moore will be making the trip to season-ending Tour Championship in Atlanta, which comes with numerous perks, including entry into next year's first three majors.

Kuchar, who has been battling a virus and could barely stand at the end of Friday's second round, turned in a much steadier effort on Saturday to leave himself within striking distance of his second win in three weeks.

Heading to Celtic Manor for the October 1-3 Ryder Cup, Kuchar may well be the in-form player for the United States with seven top 10s in his last 10 starts, including a win at the Barclays that helped put him firmly atop the FedExCup standings.

"I am nowhere near 100 percent but the difference between yesterday and today is big," said Kuchar, who shared the second round lead with Wi. "I think the position I'm in, if I can get going and have a day like today and make a few putts, I'll find myself up there with a chance to win."

A battling Tiger Woods fired a 68 to keep alive his hopes of securing a spot at the Tour Championship.

Woods, projected to need a top-five finish in order to join the field, gave himself a chance with his best round of the week.

Stalled on level par, Woods launched into a late rally with birdies at four and five before signing off with another birdie at the ninth for his first sub-par round this week at a layout that has yielded five victories for him in the past.

The world number one fired a sizzling 62 on the way to claiming his last PGA Tour victory here a year ago and will need something similar if he wants to be part of the action at the Tour Championship.

Woods finished on even-par 213, eight behind Moore but level with long-time rival Phil Mickelson who laboured to a 70 to set up an intriguing final-round pairing involving the two Ryder Cup team mates.

(Editing by Frank Pingue)