Co-leader Aaron Rai has a 35-foot putt for birdie on the 18th.

He's holed these under pressure before - to win this event I think he'll need it, with others still with holes to play.

What a tasty response from Rory McIlroy. The six-time major winner zips into four feet on the par-three 14th.

And this time his short birdie putt disappears.

Adam Scott's ball is just outside Rory McIlroy's so he is up first and the Australian makes no mistake.

What did his playing partner take from that? Not too much. It's a chance spurned.

Iain Carter
BBC golf correspondent on BBC Radio 5 Sports Extra 3 at Wentworth

It does feel like there's always an extra gear available to Rory McIlroy that you can't say about so many of the other players.

It's just the quality of golfer that he is.

Viktor Hovland is at four under for the day with no blemishes to his card today but he now finds the water on the 18th.

His short approach shot skids when it hits the fringe and scurries down the banking into the drink.

It's like throwing darts for Rory McIlroy and Adam Scott as they attack the pin on the 13th.

Both drop into around five feet to present themselves with birdie opportunities.

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Aaron Rai falls low with a 15-foot birdie putt - a big opportunity missed for the Englishman.

He goes to the 18th knowing that many in the chasing pack have got plenty of golf to play.

For a third day on the trot Manuel Elvira makes a birdie on the 10th and that means Aaron Rai has company at the top of the leaderboard.

I wonder if his brother Nacho, is out supporting him after signing for a one-over 73 earlier that leaves him at seven under overall?

Rory McIlroy's is playing off his tip toes, having to stand in the front greenside bunker with his ball a few inches above him on the grass verge.

It does not stop him from tickling a chip up towards the hole and then tapping in for a simply outrageous birdie, given where his drive ended up on the par-five.

Adam Scott also gets up and down from the sand for a four.

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Matt Fitzpatrick is chasing now and that probably contributes to his pulled approach on the 15th. The Englishman gets up and down though from the left of the green and that just about keeps him in the frame.

Rory McIlroy finds the trees on the 12th and then plays an almighty hook to escape and blast his ball up towards the dance floor.

It's not far from being perfect, but just comes up short and he may well be in the sand again, but it's a decent miss there.

Manuel Elvira gets his reward for a glorious wedge into the eighth as his ball spins into around a foot.

The birdie that follows puts the Spaniard one shot off the lead.

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Rory McIlroy tries a little floater from the semi rough but there's not enough juice on that and his ball catches the bump and squirts back down into the greenside bunker.

The Northern Irishman then clips around seven feet past but makes the return to limit the damage to a single stroke.

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Alex Noren recently joined European captain Luke Donald and 15 other players for an early scouting trip to Adare Manor, prior to next year's Ryder Cup.

And if he plays like this over the next 12 month's who is to say he won't be in the team after being one of the vice captains last time around.

The Swede drains a 12-foot putt for birdie and is now just two back.

It's a 68 to finish for Ireland's Shane Lowry - his best round of the week but he left himself too much to do.

He's only four off the lead but it's so congested up there that he's only tied for 20th.

Scotland's Robert MacIntyre has fallen away, back-to-back bogies knocking him back to -10.

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Rory McIlroy looks disgusted with himself. Playing out of the fairway bunker on the 11th, his approach drifts left and appears to have either found more sand or the semi-rough before the green.

Good up and down needed.

Aaron Rai's putter is very hot at the moment.

He normally makes another superb birdie putt - on this occasion it stays up but the Englishman stays top of the leaderboard with more scoring chances to come.

An absolute shocker from Joaquin Niemann on the ninth. The Chilean hits a wayward tee shot left and incurs a penalty.

And when he reloads he finds the rough down the right.His approach from there comes up well short and he then misses a putt for a double bogey, meaning he walks off with a seven.

That may well have torpedoed his hopes of victory.

This feels like a must-make putt for Ryan Fox in the 13th. It's from par from around 12 feet and he escapes without dropping a shot.

Matt Fitzpatrick is up next looking for a fourth consecutive birdie but that doesn't break left.

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A third birdie in a row for England's Aaron Rai and he's emerged from this swathe of players to take the lead.

The major winner is running out of holes but if he can make up a couple more shots from the final four holes he'll have a chance.