Swede Stenson's playing partner Mikko Illonen - it's an all Nordic affair - saves par on five to remain just a birdie away from the leading quintet.

Keeping up with this madness? If not, here's the latest state of play....

Rickie Fowler bounces back from that mistake on the second in style! He pulls back that bogey straight away with a birdie on four, moving into a four-way tie on 12 under.

Four-way tie? Scrap that. It's a FIVE-WAY tie now as Henrik Stenson joins Messrs McIlroy, Mickelson, Wiesberger and Fowler in the leading pack.

There are a tonne of players lining up for this, making a play-off more likely. If this final round goes into Monday, your dedicated live text team will be giving up their precious days off to cover it.

With that in mind, we want your answers - what's the biggest sacrifice you've made for your sport? Tweet #bbcgolf.

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But the Open Champion starts Sunday with two putts on holes one and two and three on the third....

There could be a potential 62 out there today, to break the lowest single round in a major. Ernie Els is flying and eyeing another piece of history, this from Golf Channel statistician Justin Ray:, external Ernie Els started day T23. No player outside top-20 entering final round of major has ever gone on to win.

I'll tell you a man who is not buckling...Ernie Els. The hulking South African cans another birdie on 11 - his sixth of the final round - to go one short of McIlroy, Mickelson and Wiesberger.

Uh oh. Squeaky bum time for Rory McIlroy - who pushes that tiddler down the right of the tin cup. He drops back into a three-way tie with a bogey on three.

Not the most impressive putt you'll ever see from McIlroy. He leaves his birdie putt about five foot short on three - chance for Wiesberger? No. He leaves himself with some unnecessary work to do.

Rory McIlroy and Bernd Wiesberger both find the heart of the third green, birdie chances ahoy for the final pair.

One man who is already aboard that birdie train is Wales' Jamie Donaldson. Donaldson drains one from distance on five, moving to nine under and four adrift of top spot.

McIlroy's caddie takes out the flag on two, but his boss can't find the target and will settle for a par. Playing partner Wiesberger takes the same.

And here's Phil! Mickelson knocks in his birdie effort on three and Fowler, not to be outdone, follow suits. Those two are prowling around the top of the leaderboard like hungry foxes stalking their prey...

Whoops of delight greet an almost-perfect pair of tee shots from Rickie Fowler and Phil Mickelson on the third. Lefty stick his pin high, eight foot to the left, before his younger, brighter-dressed pal manages to land his effort inside that. Beautiful.

Weisberger plants his tee shot on two into the right-hand bunker, but walks up to find a clean lie in the firm sand. The Austrian catches his second a little heavy and it runs up short of the green. Next up is McIlroy. The Northern Irishman turns his second over a little and the ball skips off the back.

Big Ernie Els (because that's his full name) scrawls another minus on to his scorecard with a three on the par-four ninth. That means the South African goes out in a five-under 30, just three behind McIlroy. Bet he's glad the PGA chiefs didn't abandon today's play during that heavy deluge earlier - like he suggested they should have. For your information - the lowest round in a major is 63...

Rickie Fowler takes a penalty drop after finding the water in the thick stuff on two, but recovers to stick a brilliant third on to the dancefloor. Still a big ask to avoid dropping an early shot....

Wiesberger and McIlroy have similar length 15+ foot putts on the first, the Austrian steps up first and leaves his effort short. On three, Henrik Stenson sinks a two to move 11 under - just two behind leader McIlroy.

Day demands the flag is whipped out as he tries to chip in from the right edge, but rolls up just short of the gaping hole. Behind him on the second tee is Rickie Fowler - and he swipes one left into the same danger where Day memorably waded into yesterday.

Jason Day into the second, going with eight iron... misses by a few feet to the right. Wiesberger is a big boy and here he is going with wedge from 160-odd yards at the first. Decent, not great. McIlroy, too, is safely on...