Third round leaderboard:
-17 J Day (Aus) -16 B Snedeker (US) -15 Luke Donald (Eng) Selected others: -13 S Stricker (US) -12 P Mickelson (US) -10 V Singh (Fij) -7 T Woods (US), B Davis (Eng) -4 R McIlroy (NI), P Casey (Eng)
Donald is well-placed to challenge in the final round
Luke Donald remained in contention for the Deutsche Bank Championship after a third round five-under 66 left him two shots off the lead in third.
Donald shot six birdies to go 15 under overall, a shot behind American Brandt Snedeker (67) and two behind leader Jason Day of Australia, who shot a 66.
Steve Stricker is 13 under and compatriot Phil Mickelson 12 under.
Either American could overtake Tiger Woods, who is joint 23rd on seven under, as world number one.
Mickelson, playing in the 10th tournament whereby he has a mathematical chance of usurping Woods, might only need to finish in fourth place alone, provided Woods is out of the top 24.
"I haven't paid attention to what needs to happen," said Mickelson. "But I'm looking forward to getting in the hunt tomorrow and seeing if I can get off to a good start and make some birdies."
Woods began well and came within four shots of the leaders, but could only manage one birdie over the last 11 holes and shot a two-under 69.
"Today was a bit of a struggle," admitted Woods, who has not won this year after returning to playing following allegations about his private life.
"Overall today I think I played better than what my score indicated.
"I had a lot of putts that I didn't make today. I made a couple nice par putts, but boy, I missed a lot of birdie putts. I kept getting double breaking putts.
"I had to really grind and stay committed to what I was doing out there. I did it for the most part.
"Early on I was struggling a little bit, but fixed it, got it, and hit a lot of good shots after that."
Donald, who is winless on the PGA Tour in more than four years, was steady again in his first tournament since being picked for Europe's Ryder Cup team.
Day, who began the day tied with Snedeker for the lead, recorded just one bogey, at the 16th, in an otherwise impressive round in a testing breeze at the Boston TPC.
"I played great today and just one little mistake," said the 22-year-old, who secured his maiden PGA Tour victory in Texas in May. "Overall I feel very happy with how I played and how I handled myself. Tomorrow I'm just going to try to do what I did today."
Fijian Vijay Singh is tied for 13th after a round of 69, which included a rare albatross when he holed a 229-yard 5-iron on the par-five second.
Northern Ireland's Rory McIlroy carded a 69 to take him to four under, where he is joined by England's Paul Casey, who shot a 71.
"I hit it just like I wanted to and was hoping it was going to get up on the green somewhere, and it went in the hole," said Singh
Potenshöjande medel - potenshöjande medel