Right then, it is time for us to go and lie down in a dark room, rest our brains and typing fingers, and recharge the batteries ahead of tomorrow's finale. Good job we're not playing, eh?
While we disappear into Saturday night, this page is going nowhere yet. That means you can watch all of the day three highlights right here until 22:00 BST.
That's how Jordan Spieth is spending his night, possibly. Join us again tomorrow to see if anyone can stop the American lifting the Claret Jug. Maybe it might only be the man himself who can.
Cheerio!
Tomorrow's tee-times
Tomorrow's tee-times have already been revealed, meaning those players wanting an early night can get to bed without worrying about what time they have to set the alarm.
England's Danny Willett is the first man out - on his tod - at 07:55 BST, before the leaders tee off at 14:30.
Looking at Rory McIlroy's card he's taken 28 putts today, the same number as Jordan Spieth.
But away from the green he could not live with the American. Spieth found the fairway 64% of the time and the green in regulation with 78% of his efforts.
Rors was down on 43% from the tee and 67% of the greens. This grimaced face lived with him for all of his back nine.
'It was the Spieth of 2015'
Jordan Spieth looked unstoppable in 2015, winning the Masters and the US Open, then coming close to making it a hat-trick at the PGA.
BBC Radio 5 live's Jay Townsend and John Murray reckon our leader is back close to his best...
Some users may have to click the link to see this Tweet.
Tune in to the highlights
BBC Two
Only just joining us? Tut tut. But we'll forgive you if you head over to BBC Two (or click the 'play' icon on this page) to watch our highlights show.
And even if you have followed every single word over the past nine hours then we still recommend you tune in.
Post update
McIlroy (-2 after 18)
Getty ImagesCopyright: Getty Images
Northern Ireland's Rory McIlroy, speaking to BBC Radio 5 live, after carding a one-under 69: "Usually you come off Royal Birkdale shooting under par and you would be pretty pleased.
"But it was so benign out there today and you needed to shoot at least four of five under par to feel like you were making ground out there - and I didn't.
"I made a great start but couldn't keep it going. I made a poor swing on seven and made bogey there, I hit poor tee shot on eight and had a bad lie and couldn't get to the green.
"I hit the complete wrong club off the tee on 10, bringing all bunkers into play which I shouldn't have so I am really frustrated with that.
"I had some chances coming in, but I've left myself too much going into tomorrow, but it will be nice to sign off with good score.
"For some reason not quite on top of my game but I hung in there."
The leader - I've had the height and humbling
Spieth (-11)
Jordan Spieth speaks to Sky Sports: "I've had a five shot lead in a major and squandered it before. I've had the height and the humbling. I will keep my head down. That's the biggest thing to do in the next 20 hours. Stay loose, smile a lot and if I play like I did today, things will take care of themselves."
Post update
Spieth (-11)
The way he's going, Jordan Spieth could probably play every shot on his knees tomorrow and still lift the Claret Jug...
Getty ImagesCopyright: Getty Images
Watch highlights of record-breaking day
BBC Two (and BBC Sport website) 20:00 BST
Ken Brown
BBC Sport commentator at Royal Birkdale
If ever there was going to be a
day that someone could shoot a 62 and set a new record low for a round at a
major, today was that day. The greens were softer after yesterday’s rain, they
were perfectly paced and there was just a zephyr of wind.
Ideal.
Branden Grace played one of those
once in a lifetime rounds. He is a winner, and one of those guys who isn’t
afraid to keep going and going and going. It was a special round and it might
be a long time until his new mark is broken.
Leader Jordan Spieth came out all
guns blazing. He is in total control of his game, he is reading greens well,
nibbling away with a few birdies and dropping very few strokes. There is no
doubt he is the man to beat.
Rory McIlroy keeps going one step
forward and then one step back. It’s very frustrating for him as he keeps
losing his momentum. I wouldn’t say he can’t do it tomorrow, but he is making
life very difficult for himself.
Mr Steady Matt Kuchar got his
tactics right yet again, while world number one Dustin Johnson attacked the
course unbelievably, but he will be a little bit disappointed how far he kept
leaving himself from the hole.
A record breaking day, with
stories galore, I can't wait for tomorrow.
WATCH: Spieth nearly sinks delightful approach to 3rd
Watch Jordan Spieth's delightful approach to within inches at the par-four third. The leader is looking ruthless.
Video content
Video caption: Spieth delightful approach on the greenSpieth delightful approach on the green
The one thing that needs to be remembered is Jordan Spieth had a five shot lead going into the back nine of the Masters a couple of years ago. It was impossible to see that collapse then as it is to see now. My feeling is that two years older, two years wiser. We are seeing a remarkable career developing.
Two 65s by Jordan Spieth is phenomenal play around Royal Birkdale.
It is incredible to watch Jordan Spieth - sometimes I have to pinch myself. It looks like he is on his way to his third major.
To put it in perspective, Kuchar is going to have beat Jordan by four shots tomorrow. Watching the way he operated today, I can't see that.
Spieth finishes with a birdie
Spieth (-11 after 18), Kuchar (-8 after 18)
Matt Kuchar and Jordan Spieth stand in the long shadows of the setting sun on the 18th green, the grandstands packed around them.
Both take time to assess their putts, down on their haunches.
Spieth with a 24ft putt for birdie, good pace, good shape, it curves round and yes it's in. He restores his lead, punches the air and will sign for a 65.
Kuchar with a birdie attempt but misses. He takes par instead, takes his cap off and shakes hands with his younger playing partner.
They will do this all again tomorrow.
Post update
Jay Townsend
BBC Radio 5 live golf expert
Very good shot from that lie by Matt Kuchar. It could have been shot of the day.
Getty ImagesCopyright: Getty Images
Post update
Spieth (-10 after 17), Kuchar (-8 after 17)
Second shots for the last pairing now.
Kuchar is 170 yards to the right of the green on an awkward downhill lie.
His shot pitches on the skirt off the green and rolls towards the cup, but settles 7ft past the hole.
Spieth is 132 yards away, he doesn't like his shot, it catches some rough on the front right of the green which prevents the roll towards the hole.
Poults digs in late...
Poulter (-2) Koepka (-6)
Brooks Koepka will go to bed tonight knowing he has to chase and chase hard tomorrow. A par on 18 brings him home in thee under today, six under for the week. He has the firepower to find four shots but will need his 'A' game.
Ian Poulter is putting for par from 20ft... go on... get in... beautiful weight. He is one over for the day and looks like a man wrapped in confusion. There's joy over the put but a deeper angst. Chance gone.
Bank on Jordan
Spieth (-10 after 17)
Getty ImagesCopyright: Getty Images
Jordan Spieth is a young man with a few quid in his back pocket. In 2015, he knocked Tiger Woods off Golf Digest's biggest earners list for the first time in 13 years. A year later, he bought a house from fellow US golfer Hunter Mahan which has a 12-car garage, swimming pool, golf simulator and indoor basketball court.
It's all hard earned by the 23-year-old. His two major championship wins in 2015 were the tip of an iceberg which started forming in 2013 when Spieth became the first teenager to win a PGA Tour event in 82 years.
On the 18th
Spieth (-10 after 17), Kuchar (-8 after 17)
On the 18th tee box.
Kuchar's drive looks good, but runs off the fairway onto the first cut of rough.
Spieth's drive grips the edge of the fairway and rolls towards the middle.
Perfect position.
The pair now walk up the 18th to get their applause.
Live Reporting
Jonathan Jurejko and Luke Reddy
All times stated are UK
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Video caption: Spieth delightful approach on the greenSpieth delightful approach on the green 
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Latest PostGoodbye from us...
Right then, it is time for us to go and lie down in a dark room, rest our brains and typing fingers, and recharge the batteries ahead of tomorrow's finale. Good job we're not playing, eh?
While we disappear into Saturday night, this page is going nowhere yet. That means you can watch all of the day three highlights right here until 22:00 BST.
That's how Jordan Spieth is spending his night, possibly. Join us again tomorrow to see if anyone can stop the American lifting the Claret Jug. Maybe it might only be the man himself who can.
Cheerio!
Tomorrow's tee-times
Tomorrow's tee-times have already been revealed, meaning those players wanting an early night can get to bed without worrying about what time they have to set the alarm.
England's Danny Willett is the first man out - on his tod - at 07:55 BST, before the leaders tee off at 14:30.
Here's when those in the Claret Jug mix go out:
1330 Ian Poulter, Richie Ramsay
1340 Rory McIlroy, Ross Fisher
1350 Rafael Cabrera-Bello (Spa), Chan Kim (USA)
1400 Henrik Stenson (Swe), Dustin Johnson (USA)
1410 Hideki Matsuyama (Jpn), Branden Grace (Rsa)
1420 Brooks Koepka (USA), Austin Connelly (Can)
1430 Matt Kuchar (USA), Jordan Spieth (USA)
Spieth to better Seve
Spieth (-11)
App users may need to click the link.
The face of nine holes...
McIlroy (-2)
Looking at Rory McIlroy's card he's taken 28 putts today, the same number as Jordan Spieth.
But away from the green he could not live with the American. Spieth found the fairway 64% of the time and the green in regulation with 78% of his efforts.
Rors was down on 43% from the tee and 67% of the greens. This grimaced face lived with him for all of his back nine.
'It was the Spieth of 2015'
Jordan Spieth looked unstoppable in 2015, winning the Masters and the US Open, then coming close to making it a hat-trick at the PGA.
BBC Radio 5 live's Jay Townsend and John Murray reckon our leader is back close to his best...
Some users may have to click the link to see this Tweet.
Tune in to the highlights
BBC Two
Only just joining us? Tut tut. But we'll forgive you if you head over to BBC Two (or click the 'play' icon on this page) to watch our highlights show.
And even if you have followed every single word over the past nine hours then we still recommend you tune in.
Post update
McIlroy (-2 after 18)
Northern Ireland's Rory McIlroy, speaking to BBC Radio 5 live, after carding a one-under 69: "Usually you come off Royal Birkdale shooting under par and you would be pretty pleased.
"But it was so benign out there today and you needed to shoot at least four of five under par to feel like you were making ground out there - and I didn't.
"I made a great start but couldn't keep it going. I made a poor swing on seven and made bogey there, I hit poor tee shot on eight and had a bad lie and couldn't get to the green.
"I hit the complete wrong club off the tee on 10, bringing all bunkers into play which I shouldn't have so I am really frustrated with that.
"I had some chances coming in, but I've left myself too much going into tomorrow, but it will be nice to sign off with good score.
"For some reason not quite on top of my game but I hung in there."
The leader - I've had the height and humbling
Spieth (-11)
Jordan Spieth speaks to Sky Sports: "I've had a five shot lead in a major and squandered it before. I've had the height and the humbling. I will keep my head down. That's the biggest thing to do in the next 20 hours. Stay loose, smile a lot and if I play like I did today, things will take care of themselves."
Post update
Spieth (-11)
The way he's going, Jordan Spieth could probably play every shot on his knees tomorrow and still lift the Claret Jug...
Watch highlights of record-breaking day
BBC Two (and BBC Sport website) 20:00 BST
Ken Brown
BBC Sport commentator at Royal Birkdale
If ever there was going to be a day that someone could shoot a 62 and set a new record low for a round at a major, today was that day. The greens were softer after yesterday’s rain, they were perfectly paced and there was just a zephyr of wind.
Ideal.
Branden Grace played one of those once in a lifetime rounds. He is a winner, and one of those guys who isn’t afraid to keep going and going and going. It was a special round and it might be a long time until his new mark is broken.
Leader Jordan Spieth came out all guns blazing. He is in total control of his game, he is reading greens well, nibbling away with a few birdies and dropping very few strokes. There is no doubt he is the man to beat.
Rory McIlroy keeps going one step forward and then one step back. It’s very frustrating for him as he keeps losing his momentum. I wouldn’t say he can’t do it tomorrow, but he is making life very difficult for himself.
Mr Steady Matt Kuchar got his tactics right yet again, while world number one Dustin Johnson attacked the course unbelievably, but he will be a little bit disappointed how far he kept leaving himself from the hole.
A record breaking day, with stories galore, I can't wait for tomorrow.
WATCH: Spieth nearly sinks delightful approach to 3rd
Watch Jordan Spieth's delightful approach to within inches at the par-four third. The leader is looking ruthless.
Video content
Post update
Spieth (-11)
Iain Carter
BBC Sport golf correspondent at Royal Birkdale
The one thing that needs to be remembered is Jordan Spieth had a five shot lead going into the back nine of the Masters a couple of years ago. It was impossible to see that collapse then as it is to see now. My feeling is that two years older, two years wiser. We are seeing a remarkable career developing.
Post update
Post update
Spieth (-11 after 18)
Jay Townsend
BBC Radio 5 live golf expert
Two 65s by Jordan Spieth is phenomenal play around Royal Birkdale.
It is incredible to watch Jordan Spieth - sometimes I have to pinch myself. It looks like he is on his way to his third major.
To put it in perspective, Kuchar is going to have beat Jordan by four shots tomorrow. Watching the way he operated today, I can't see that.
Spieth finishes with a birdie
Spieth (-11 after 18), Kuchar (-8 after 18)
Matt Kuchar and Jordan Spieth stand in the long shadows of the setting sun on the 18th green, the grandstands packed around them.
Both take time to assess their putts, down on their haunches.
Spieth with a 24ft putt for birdie, good pace, good shape, it curves round and yes it's in. He restores his lead, punches the air and will sign for a 65.
Kuchar with a birdie attempt but misses. He takes par instead, takes his cap off and shakes hands with his younger playing partner.
They will do this all again tomorrow.
Post update
Jay Townsend
BBC Radio 5 live golf expert
Very good shot from that lie by Matt Kuchar. It could have been shot of the day.
Post update
Spieth (-10 after 17), Kuchar (-8 after 17)
Second shots for the last pairing now.
Kuchar is 170 yards to the right of the green on an awkward downhill lie.
His shot pitches on the skirt off the green and rolls towards the cup, but settles 7ft past the hole.
Spieth is 132 yards away, he doesn't like his shot, it catches some rough on the front right of the green which prevents the roll towards the hole.
Poults digs in late...
Poulter (-2) Koepka (-6)
Brooks Koepka will go to bed tonight knowing he has to chase and chase hard tomorrow. A par on 18 brings him home in thee under today, six under for the week. He has the firepower to find four shots but will need his 'A' game.
Ian Poulter is putting for par from 20ft... go on... get in... beautiful weight. He is one over for the day and looks like a man wrapped in confusion. There's joy over the put but a deeper angst. Chance gone.
Bank on Jordan
Spieth (-10 after 17)
Jordan Spieth is a young man with a few quid in his back pocket. In 2015, he knocked Tiger Woods off Golf Digest's biggest earners list for the first time in 13 years. A year later, he bought a house from fellow US golfer Hunter Mahan which has a 12-car garage, swimming pool, golf simulator and indoor basketball court.
It's all hard earned by the 23-year-old. His two major championship wins in 2015 were the tip of an iceberg which started forming in 2013 when Spieth became the first teenager to win a PGA Tour event in 82 years.
On the 18th
Spieth (-10 after 17), Kuchar (-8 after 17)
On the 18th tee box.
Kuchar's drive looks good, but runs off the fairway onto the first cut of rough.
Spieth's drive grips the edge of the fairway and rolls towards the middle.
Perfect position.
The pair now walk up the 18th to get their applause.