SECOND ROUND LEADERBOARD:
-8 P Harrington (SA) -7 C Petterson (Swe), J Furyk (US), B Watson (US) R Goosen (SA) -6 S Stricker (US), J Maggert (US), S Elkington (Aus) Selected others: -4 O Wilson (Eng) -3 L Donald (Eng)
Harrington made the best of the morning conditions
Padraig Harrington shot his lowest round of the year - a six-under-par 65 - to take the halfway lead at the Transitions Championship in Florida.
The former Open and USPGA champion fired seven birdies to lead Carl Petterson, Jim Furyk, Bubba Watson and Retief Goosen by one shot.
The Irishman could have been further ahead but for a bogey at the sixth - his third-last hole.
He recovered from that to pick up shots at the seventh and ninth.
Harrington started the day four behind American Garrett Willis after his opening round of 69.
But he said afterwards that his relative lack of knowledge about the course had worked in his favour.
"Because I don't know so many of the shots I have to keep hitting at the flags and it seems to be working quite nicely," he said.
"The greens are superb and the wind was predictable, so it was a good morning for scoring.
"I'm capable of winning in the form I'm in. Am I in my best form? No. Am I getting there? Yes."
English pair Ross Fisher (70) and Luke Donald (68) are four under and three under respectively, with Scot Martin Laird (70) one further back.
Greg Owen survived the cut by two shots by parring the last 13 holes on his way to a 70.
Justin Rose, 59th in the world and looking to climb into the top 50 in time for the Masters, kept that hope alive by improving five strokes on his opening 73 and moving to one under.
Brian Davis survived the cut on the two-over limit thanks to a 73, but Ian Poulter repeated his first-round 73 to miss out on the third round by two strokes.