Third round leaderboard: -8 R Moore (US) -7 D Johnson (US), C Wi (SKo), M Kuchar (US) -6 I Poulter (Eng), P Casey (Eng) -5 E Els (SA), K Na (US)
Selected others: -4 R Goosen (SA) -3 J Rose (Eng), L Donald (Eng), S Stricker (US) level J Furyk (US), T Woods (US), P Mickelson (US) +1 H Mahan (US), S Cink (US), M Sim (Aus) +2 B Watson (US), M Laird (Sco) +3 R Fowler (US) +4 A Kim (US) +5 R McIlroy (NI) +7 J Overton (US) +9 B Davis (Eng)
Casey (l) and Poulter are both in fine form in Illinois
English pair Ian Poulter and Paul Casey lie two shots off the lead going into the last round of the BMW Championship.
European Ryder Cup player Poulter and Casey, who controversially missed out on selection, both went round in 69 to finish two shots off leader Ryan Moore.
Moore leads by one from United States Ryder Cup duo Dustin Johnson and Matt Kuchar and South Korea's Charlie Wi.
Tiger Woods has a chance of making the season-ending Tour Championship after a 68 left him eight off the pace.
World number one Woods, also a member of Corey Pavin's US team for the Celtic Manor showdown in October, dropped a shot on his first hole but recovered with five birdies and just one more bogey as he jumped from 40th to 22nd.
However, he still has his work cut out to qualify for the elite 30-man field in Atlanta in a fortnight's time.
The 14-time major winner is likely to require a top-five finish at the Illinois event - the third leg of the FedEx Cup play-off series - to make the 30-man Tour Championship field.
"Hopefully I can play myself into a round where I can be in contention to win," said defending champion Woods, a five-time winner on the Cog Hill course in Lemont.
"As of now it looks like probably 61 or 62 might have to be the number," he added.
Poulter had five birdies and three bogeys, one of those on the 18th.
The 34-year-old is 27th in the FedEx Cup standings and will hope to improve on last year's performance when he missed out by a shot after finding the water on the same final hole at Cog Hill.
Poulter's compatriot Casey, the world number nine, continued to give Europe captain Colin Montgomerie cause to doubt his decision to omit him from his team with a third consecutive 69.
Casey dropped two shots on the second and sixth holes before picking up four strokes on nine, 11, 15 and 17.
Luke Donald, one of Europe's wildcards, shot a 72 and was three under for the tournament, alongside another Englishman who was snubbed by Montgomerie, Justin Rose (71).
Aside from Woods, Pavin's other wildcard picks, Zach Johnson, Stewart Cink and Rickie Fowler endured differing fortunes.
Johnson shot a round-of-the-day 66 and is just four off the lead, Cink had an unremarkable 71 to lie a further five shots behind while 21-year-old Fowler shot a 72 and is well out of contention on three over.