Former Open champion Justin Leonard shares the lead with a round to play at the Tampa Bay Championship.
The 1997 winner at Troon has slumped to 315 in the world rankings since the most recent of his 13 PGA Tour victories in 2008 but is in great position to make a serious leap back up after a third-round 67 at the Copperhead Course left him tied at the top with fellow American Kevin Streelman and South African George Coetzee.
Streelman and Coetzee, who are looking for their first PGA Tour wins, matched Leonard's 54-hole total of six-under after carding rounds of 65 and 68 respectively.
But with the field bunched at the Innisbrook resort in Florida, the threats to the leading trio are numerous.
Former US Open champion and 16-time PGA Tour winner Jim Furyk is just one back in a four-man bunch on five-under while defending champion Luke Donald remains very much in contention after working his way through the field with a four-under 67.
The world number three birdied 3, 7, 10 and 15 to leap up 23 places to tied eighth, just two shots behind the leaders.
Sergio Garcia was tied for the lead early on in round three after birdies at five and six and but had three bogeys and a double on his card after that and a closing five gave him a one-over 72.
The Spaniard is far from out of it though and will start Sunday's final round just three shots in arrears.
Jason Dufner had a putt to take the lead on seven-under at 11 but missed it, failed to convert the one back and followed that bogey with a double on 13. Another bogey at 17 saw him slip all the way back to two-under.
World number seven Adam Scott had an even more disappointing day. The Aussie started the round just one off the pace but followed a birdie at the first with six bogeys in his next 12 holes and another at 18 meant a 76 and a five-shot gap to close on Sunday.