SECOND ROUND LEADERBOARD (GB & Ire unless stated)
-8 P Casey -6 D Horsey, MA Jimenez (Spa), S Kjeldsen (Nor), A Wall, M Warren -5 T Aiken (SA), S Dodd, B Curtis (US)
Selected others: -2 C Montgomerie, R McIlroy Level J Daly (US), JM Olazabal (Spa) +1 D Howell, D Clarke, +2 L Donald, E Els (SA), G McDowell +4 R Goosen (SA), H Stenson (Swe) +5 A Cabrera (Arg)
Highlights - PGA Championship day 2
England's Paul Casey shot a five-under 67 to take a two-shot halfway lead at the PGA Championship second round.
He picked up five shots in five holes to reach 10 under at one stage, but bogeys at the 14th and 17th saw him finish on eight under at Wentworth.
Miguel Angel Jimenez and Soren Kjeldsen are tied second with British trio David Horsey, Anthony Wall and Marc Warren.
Lee Westwood, Henrik Stenson, Retief Goosen and US Masters champion Angel Cabrera all missed the cut.
Casey's round burst into life with two birdies at the 9th and 10th and he missed an 8ft putt for an eagle at the 12th, although he birdied that hole to go to eight under.
At the 470-yard par-four 13th he holed his nine-iron approach for an eagle that took him to 10 under.
Highlights - Casey holes from 156 yards
"I was just coasting along and it went bananas on the start of the back nine and then I stumbled on the way in," said Casey.
"Hopefully I will be playing with Miguel tomorrow (Saturday). He is the man to beat and a great character and we will have a lot of fun and entertain this crowd.
"I always used to watch this event as a kid and dreamt of being here and here I am - it's very cool. This is our flagship event. It gets me going."
Defending champion Jimenez boosted his chances of retaining the title with an eagle three at the 18th to card a two under 70 but was frustrated by other near-misses.
"I missed a birdie putt from eight feet at the 14th and another from three feet at the 17th," he said, adding his game was in much the same shape as it was a year ago when he beat English Oliver Wilson in a play-off.
"It is very similar," said the Spaniard. "I'm hitting the ball well, playing well and the most important thing now is my head.
"I have to keep concentrating, keep doing the same thing, just focus."
Former European number one Westwood, runner-up to Colin Montgomerie when the Scot made it three wins in a row at Wentworth in 2000, has had a wretched record in the event since then and two 77s merely added to the list.
"I know where Padraig Harrington and Ian Poulter are coming from - and I might join the club," he said after comfortably missing the cut.
Harrington and Poulter both stayed away for the second year running this week because of the state of the greens, but that was not Westwood's problem.
"They were the best I've seen here ironically for many a year," he added, the irony being that next week all 18 are being ripped up and redone.
"I just didn't hit it very well, but I missed only one cut in Europe last year and that was here."
Westwood actually pulled out injured 12 months ago and joked: "I was thinking as I was going up the sixth today that at least I had lasted longer."
Two-time major winner John Daly chipped in three times on his way to a one-under-par 71.
"I can honestly say I don't think I've chipped in three times in one full year before, much less one day," said the colourful American after finishing on level-par 144.
"It was just one of those rounds when, if I hit a bad shot it turned out really bad and I just recovered really well.
"I hung in there really well the last two days because I didn't hit the ball good at all. Yesterday the pins were tough and today they were twice as tough."