Donald back in the mix
Luke Donald's quest to regain the world number one spot was boosted by a seven-under-par second round at the Zurich Classic of New Orleans.
The 34-year-old needs to finish in the top seven at Avondale to move back above Rory McIlroy and take the top ranking.
That looked unlikely after Donald fired a one-over-par 73 on Thursday which left him eight shots adrift of the leaders at the Louisiana venue.
However, he stormed back into contention in the second round, kicking off with a birdie at his opening hole - the 10th - before adding four further birdies and an eagle two at the par-four first.
The effort moved Donald to six under par, six shots off the lead, held by Jason Dufner.
Dufner, beaten in a play-off in last year's USPGA Championship, also managed a round of seven under par.
The American capped a bogey-free round with an eagle on the par-five 18th to reach 12 under and establish a one shot lead over Russell Knox, John Rollins and Ken Duke.
Knox, a 26-year-old who was born in Inverness but now lives in Florida, followed his opening round 69 with a 64 which contained an eagle, seven birdies and a bogey.
A further shot back on 10 under were Greg Chalmers, who also fired a 64, Steve Stricker and Ernie Els.
Defending champion Bubba Watson had his second straight 71 to make the cut by a stroke in his first tournament since his Masters win, with Northern Ireland's Graeme McDowell joining him on two under after a disappointing second round of 73.
Brian Davis was alongside Donald on six under, while fellow Englishmen Greg Owen and Justin Rose were a further shot back.
However, a second round 69 was not enough to see Carshalton-born, Alabama-based Gary Christian make the cut.