Justin Rose leads by four shots on US Tour

FROM THE BBCSPORTS.COM WEBSITE
Justin Rose opened up a four-shot lead after the third round of the AT and T National in Pennsylvania.
The Englishman, who squandered a three-stroke final-round lead at last week's Travelers Championships, fired a 67 for a 10-under total of 200.
Sweden's Carl Pettersson shot a round-of-the-day 65 and South Korean Charlie Wi went around in 70 to tie for second.
Tiger Woods recovered from bogeys on his first two holes to hit his second successive 70 to lie 13 off the pace.
Woods has been struggling to find his form since returning to competitive action following revelations about his private life at the end of 2009.
And the 34-year-old did well to avoid an embarrassing score after countering bogeys - at one, two, six and 15 - with four birdies.
Rose, whose second-round 64 had given him a one-shot overnight lead, will be hoping to avoid a repeat of his last-day jitters at the Travelers in Connecticut.
The 29-year-old had three bogeys and one double bogey on his back nine there to eventually finish three strokes off a play-off, which was eventually won by Bubba Watson.
Rose will be aiming to pick up his second US PGA Tour title after breaking his US duck with victory at the Memorial earlier this month.
LEADING THIRD-ROUND TOTALS
Par 210 (3x70).
200 Justin Rose  69 64 67 200
204 Carl Pettersson  67 72 65, Charlie Wi 69 65 70.
205 Jeff Overton 68 68 69.
206 Ryan Moore 67 70 69, Jason Day 66 68 72.
207 Nick Watney 66 71 70, Bo Van Pelt 69 68 70.
208 John Merrick 72 70 66, Marc Leishman 71 70 67, Vijay Singh 71 70 67, Jonathan Byrd 70 70 68, Jim Furyk 69 70 69, Steve Marino 68 71 69, Bryce Molder 69 70 68, Brian Gay 67 70 71, J B Holmes 70 67 71, Kris Blanks 69 68 71, Robert Allenby 70 67 71.
209 Stuart Allenby 71 69 69, Nathan Green 71 69 69, Sean O'Hair 71 68 70, Billy Mayfair 68 71 70, Arjun Atwal 66 72 71, John Mallinger 67 70 72.
210 Webb Simpson 72 70 68, Chris DiMarco 72 70 68, Brandt Snedeker 71 70 69, Jimmy walker 71 69 70, Aaron Baddeley 69 70 71, Lucas Glover 71 68 71, Ted Purdy 69 70 71.
211 Steve Elkington 73 70 68, Ricky Barnes 70 72 69, Michael Letzig 67 74 70, Vaughn Taylor 70 71 70, George McNeill 71 69 71, Daniel Chopra 69  70 72, Joe Ogilvie 66 72 73, Charley Hoffman 69 67 75.
212 Chris Stroud 71 71 70, Derek Lamely 69 72 71, Bob Estes 68 73 71, Nicholas Thompson 72 67 73, Graham DeLaet 70 69 73, Ryuji Imada 68 70 74.
213 D A Points 74 69 70, Tiger Woods 73 70 70, Richard S Johnson 72 70 71, Brfendon de jonge 70 72 71, Briny Baird 70 72 71, Tim Petrovic 72 69 72, Brett Quigley 67 73 73, Garrett Willis 71 69 73.