Final pairing Kevin Kisner and Chris Stroud have been getting some last-minute practice in before teeing off at 19:45 BST.

Rickie Fowler has got the orange trousers on again as usual for the final round in honour of his alma mater, Oklahoma State University.

He has spared us the all-tangerine this time though and has a grey shirt with the vibrant strides. A nice par putt from six feet at the sixth and he's level for the day, one under for the Championship.

Image source, Getty Images

Another birdie for Jason Day. He didn't do the business for me in that sweepstake yesterday but he's one under for the day and for the Championship. He is six strokes behind Kisner, who tees off in half an hour and looked very relaxed earlier as he strolled into the clubhouse to prepare for the biggest round of his career.

So could someone come from way back? Has local lad Kevin Kisner got what it takes to hold on? Might Hideki Mutsayama become the first Japanese man to win a major?

Let us know your view using #bbcgolf, external or text 81111.

More from Rory McIlroy: "You don't want to be teeing off at 9:45 on the final round of a major. I've a good bit of time to get healthy and address a few things. The next big thing is the Masters in April and that's what my focus will be on."

(Rib injury) "It's there, I can feel it. I can play 18 holes but once I get done, having to go through the routine of getting it ready for the next day - that shouldn't happen."

Iain Carter
BBC Sport golf correspondent

I can see someone coming out of the pack.

Here more from the BBC 5 live team on their way to Quail Hollow.

Thoughts from Rory McIlroy after his 68 , which currently has him in a tie for 23rd: "It was a bit better, nice to finish the week on a positive note. If you can start under par after the first six holes you're not putting yourself under pressure and I didn't for a couple of days - that's why I'm not on that putting green warming up to play with the leaders now."

Not to be for Open champion Jordan Spieth either this week. Rounds of 72, 73 and 71 have left him on the periphery and has has taken a double bogey seven at the seventh today. The world number two is four over with a handful of holes to complete.

Image source, Getty Images

On red button, online, connected TVs, and iPlayer. You can watch on the link at the top of this page. Coverage is on BBC Two from 22:00 BST.

A good spot from ESPN's golf writer Jason Sobel. It seems Chris Stroud is the superstitious type. The trousers are noticeable indeed. Here he is lifting the trophy at the Barracuda Championship last week...

Image source, Getty Images

Many people thought Rory McIlroy was going to win his third US PGA title this week, given two previous victories at Quail Hollow, but it has not been his week.

Two 72s and a 73 left the world number four out of contention but he has finished well with a 68 containing four birdies. It all adds up to one over for the week and Rory remains without a major since 2014.

Image source, Getty Images

It's warming up out there in Charlotte. Bill Haas, who raked in that $10m FedEx Cup haul almost six years ago now, is sweating up in the paddock as he comes down the 18th. It's 87 degrees out there already, with a "Real Feel," estimating humidity at 106.

Image source, Getty Images

As well as updates on this very page, our TV coverage starts from 19:00 BST here, on the red button and the iPlayer. And there's radio coverage from 22:00.

Sunday 13 August

19:00-00:15 - BBC Red Button, BBC Sport website, BBC iPlayer

22:00-00:15 - BBC Two

22:00-01:00 - Radio 5 live

Sublime!

2015 US PGA champion Jason Day has just holed a bunker shot on the first to make birdie and move to -1.

But it should have been so much better for the Aussie. He was four under on the 18th tee of his third round and a par would have meant he was just three shots behind leader Kevin Kisner.

Instead he made a quadruple bogey eight after some questionable decision-making and a visit to a series of bushes down the right of the fairway. Watch Day's horror show below...

Let's have a look at some of the early action in the final round. For the most part players have found scoring tough this week but out on the course world number one Dustin Johnson is showing it can be done.

He's currently four under par for his round after 15 holes which has seen him shoot up to level par, seven shots behind leader Kevin Kisner.

Rory McIlroy is going to finish without a major win for the third year in a row but he is also going along well.

He's three under for his round which has him back to +1 and a tie for 21st after 16 holes.

Of the players out early American D.A. Points is the one making the most significant impact at the top. He has moved to -1 and a tie for 12th after a three-under first eight holes.

Image source, Reuters

Here are the tee times for the final few groups.

18:15 Jason Day (Aus), J.B. Holmes

18:25 Rickie Fowler, Paul Casey (Eng)

18:45 Sung Kang (Kor), Ryan Fox (NZ)

18:55 Francesco Molinari (Ita), Chez Reavie

19:05 Gary Woodland, Scott Brown

19:15 Graham DeLaet (Can), Patrick Reed

19:25 Louis Oosthuizen (SA), Grayson Murray

19:35 Hideki Matsuyama (Jpn), Justin Thomas

19:45 Kevin Kisner, Chris Stroud

I say a few hours, it is going to be a late night yet again and there are a couple of factors that could keep us here for a very long time. We had a delay of almost two hours on Friday because of the danger of thunder and that is regrettably apparent again today.

And what about a play-off? The last five PGA Championships have been decided in the regulation 72 holes but 17 players were separated by only seven shots going into the final round.

Should there be a play-off - and those of us with very long journeys are trying not to think about that - it will be over three holes - and not just any three holes, it will be the notorious stretch known as the Green Mile, holes 16, 17 and 18.

Matsuyama the favourite then and it is not surprising. The 25-year-old world number three has won two World Golf Championships in the last year and was second at the US Open.

Allied to that, and with the notable exception of Jordan Spieth, the first, second or third round leader has not won on the PGA Tour for the last nine events.

So, is playing in the penultimate group going to provide Japan's first men's major winner? We shall find out in a few hours.

Image source, Getty Images

Despite trailing by a shot, Hideki Matsuyama is favourite with British bookmakers to win the title.

Judging by the odds, it's a race between five players, with the rest available at 33-1 or more.