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England's Justin Rose posted a four-under 67 to be -4 overall, five shots adrift of 36-hole leader Rory McIlroy.

"I would say the winning score is going to be 16 under, somewhere in that realm. When you start even par you've got to go all guns blazing. I felt like I could have got halfway there today, but it wasn't to be," said Rose, how was -5 at one stage before back-to-back bogies at 15 and 16 put the breaks on his round.

"Some parts of the golf course are really easy out there. Getting close to the pin with your irons is easy, but that's if you catch a good lie in the fairway. Obviously the fairways are completely saturated right now.

"If it dries out at all it's going to be a nightmare out there tomorrow if we don't get a little rain from now until then. The ball is going to pick up so much mud, which is obviously tough conditions to play in."

Day leaves himself about 10 feet for an unlikely par, as Ilonen moves to seven under after a birdie at four. Adam Scott is six under after a birdie at 15, don't write off the former Masters champion from Queensland, whose thunder has been stolen by McIlroy of late.

Mickelson and playing partner Wiesberger both walked away from the four green with birds, both jumped to seven under. Sweet chip from Lefty. Furyk with a 12-footer for birdie at three, leaves it just left to stay eight under. Fowler for a bird at three, pushes it right of the cup...

Image source, PGA Championship

Selected others: -6: Brandt Snedeker (USA), Adam Scott (Aus), Henrik Stenson (Swe); -5: Sergio Garcia (Spa), Steve Striker (USA); -4: Ernie Else (SA), Justin Rose (Eng); -3: Luke Donald (Eng)

This is all getting a bit weird - Day's caddie chucks him over a club and the Aussie is going to play his second out of calf-length scrub, with no shoes on. That's a result from there, a thin across the other side of the fairway... up and down from there and that's a miraculous four. Birdie for Donaldson of Wales, he moves to six under after 10.

After Chris Wood ripped his trousers on day one of the PGA Championship, we want to know what your moment of shame on a golf course is? Tweet #bbcgolf.

Chipperhull:, external Golf partner lost ball in the rough so I went to help. Discovered he'd found it when he smashed it into my face, knocking me flat.

Oliver Smart:, external Sunk my tee shot off a par 3 into the par 4 next to it for a wrong hole in 1, never lived it down and still had to buy drinks!

... that water was calf deep, no idea why's he bothering to be honest, even if he found it he wouldn't be able to play it. He's found it! It's actually nestled into thick grass on the bank yonder, so Day pops his shoes off and goes wading over... meanwhile, back in the real world, a crisp and dry McIlroy parachutes into the middle of the second green...

Another birdie for Stenson at four, he's seven under. Westwood rams in a three-footer for par at six, that was a cute pitch from the Worksop man. What news of Mikko Ilonen? Double at two, birdie at three, these Finns are resilient. Day's caddie is removing his socks - he's going in! This really is Jurassic Park country, I'll let you know how he gets on...

Fowler moves to within one of the lead with a birdie at three. Day and McIlroy bomb it down the second. Only problem is, Day's ball has finished left of the stream. That's two he's pulled already, bad signs for the Australian.

Day makes par at the first, as does Rory. Westwood second into six, tugged it short and left. Mickelson going with three wood at the fourth, he's got a 272-yard carry over the bunker... leaks it right of the green. Mahan pops in for a 65 and he grabs the clubhouse lead on seven under par.

Image source, Getty Images

Graeme McDowell carded a horror eight at the par-four 13th, to plummet down the leaderboard. The 2010 US Open champion finished his round at +1 and is just four shots off last place.

"It's a card-wrecker, a tournament-wrecker, a weekend-wrecker, all of the above," said the Northern Irishman.

Solid old Jim Furyk opened up with a par to stay eight under and one off the lead, here's Day at the first, leaving his birdie putt six feet short. Fowler on three, going with seven iron from 188 yards, stiffs it to eight feet. McIlroy races his birdie effort by at one, that's four feet coming back.

McIlroy from bang-middle on the first and goes right at the flag, flirting with the bunker, putt for a birdie. Mickelson with a long-range birdie at the par-three third, will tap in for par. Apparently Day didn't hit his opening tee shot into a forest, because he's safely on in two.

A man you all love, our very own Ken on the course, Mr Ken Brown tweets:, external Ready to see Rory McIlroy show the world just how good he is this weekend. Hold onto your hats!

Stenson with a birdie on four, moves to seven under. Snedeker taps in for a birdie at the last and that's a round of 66 for six under overall. Wales' only hope, Jamie Donaldson, is making a move, birdieing nine for an outward 33 and five under overall.

Let's not forget Finland's Mikko Ilonen, he parred the first to remain seven under and two off the lead. The 34-year-old has only played eight majors, a surprise given that he finished ninth in the Open as a 21-year-old in 2001, and has won four times on the European Tour. Rory smacks his first drive down the middle, Day finds the middle of a forest...

We've been asking for your most embarrassing moments on the golf course after England's Chris Wood tore a hole in his trousers on round one. Needless to say, some rippers have surfaced. Text 81111 or tweet #bbcgolf to get involved.

Jed in Paris: Had a few skirmishes with B Roads myself... But my most embarrassing opening tee shot was when I managed to nutmeg myself and hit the clubhouse next to me.

Chris, still sorry: First ever round with my dad and grandad as a fresh faced 16-year-old. Hit a sweet but low shot off the fairway until I realised my hard of hearing grandad was strolling up the right. Relieved that it only hit him on the arm, but never seen a bruise like it!

You can also chip in via our Facebook page, external or on Google+. , external

Fowler all in purple today, shellacks his drive down the second. England's Ian Poulter, hoping to elbow his way into the European Ryder Cup team, couldn't get anything going today, he's level for his round after 17 and -1 overall. Stand by for McIlroy and Day on the first tee, there could be some serious gunslinging going on between those two today.

Fowler with a peach of a recovery at the first, should save par, as Westwood rolls in for an eagle at the short fourth to move to within two shots of the lead. That's the seventh eagle at the fourth today...

Spain's Sergio Garcia, who carded a five-under 66, on Sky Sports: "Because of all the rain we have had, the course is playing easier than intended. I played OK, but I wouldn't say I played amazing. I don't feel as smooth as I did at the Open or last week. But I got a good score."

On leader Rory McIlroy: "He's playing great - and he deserves it. When someone is playing that good you can admire and try to get as close as possible. It's good to see him playing so well coming into the Ryder Cup."

Image source, Getty Images