Sophie Powell
Ladies European Tour player on BBC Radio 5 Live Sports Extra

It is so open - I still can't pick a name.

What an outstanding chip! Georgia Hall fully commits and the ball scoots along and drops into the cup to give the former champion a second eagle of the day... but better still that puts her right back in the mix, one behind the current leader, Minjee Lee.

It's a level par 36 for the front nine for the home hope as Louise Duncan has a disappointing bogey on the ninth hole.

She's still not miles behind but will need to get something going sharpish on the back nine.

Minjee Lee is making this Sunday surge her trademark as for the second major running she's taken control on the final day when starting way back in the field.

It's just a seventh birdie of the day on 16 as Lee drains a superb long-range birdie putt that goes right into the heart of the hole.

With two holes left she could be hard to catch if she can find one more birdie.

Hang on, we've got another major champion charging up the leaderboard as Patty Tavatanakit makes a huge move with four straight birdies on 11, 12, 13 and 14 to power up into second on nine under.

The 21-year-old won the ANA Inspiration in April - her first and as yet only LPGA title and now she's in search of her second major with a blistering birdie run.

-10 M Lee (15), L Salas (6), A Nordqvist (6), N Koerstz Madsen (6)

-9 P Tavatanakit (14)

-8 S Kyriacou (16), L Harm (15), G Hall (11), M Sagstrom (8), L Duncan (8)

Selected others:

-7 L Thompson (8)

-6 N Korda (9)

-5 A Hewson (F)

It's birdies all round on the par five 6th hole - the par fives could end up settling this almighty scramble for the Open title.

Both players made the green in two but both had testing, snaking eagle putts and a birdie was always more likely.

Madsen had a tougher putt for her four - with a big break from left to right and even though she looked to have over cooked it it grabbed a piece of the left edge and refused to let go, somehow swirling and dropping into the cup.

That is a bit more like it - ok that eagle putt never looked like it was going to break favourably for Georgia Hall, but this was very puttable for a birdie and that should help settle those double-bogey jitters at the end of the front nine!

Still two off the pace, but plenty of holes in hand to make some magic happen.

Sophie Powell
Ladies European Tour player on BBC Radio 5 Live Sports Extra

I don't remember a major being as close as this on a Sunday.

There are a lot of surprises. You might have thought the young amateur Louise Duncan might be nervous but she isn't.

Anna Nordqvist hasn't really used her experience yet.

It is so difficult to call.

-10 M Lee (14), L Salas (6)

-9 A Nordqvist (5), N Koerstz Madsen (5)

-8 S Kyriacou (15), L Harm (14), P Tavatanakit (13), B Henderson (8), M Sagstrom (6), L Duncan (6)

Selected others:

-7 G Hall (10), L Thompson (7)

-6 N Korda (8)

-5 A Hewson (F)

My goodness - a beautifully struck putt for an eagle stops just stubbornly short and a chance to take the outright lead slips away.

Salas, ever the perfectionist, purses her lips, but back she goes to the top of the leaderboard where she joins Minjee Lee.

Minjee Lee remains in the lead on her own, but only by one shot as she misses out on the par-five 14th when sticking her second shot in the bunker.

It's 'only' a par for Lee on a hole everyone's looking to birdie.

Ouch! Just a hole after taking the lead, Madsen slips back to nine under with a bogey on the fifth hole, she left herself a testing left-to-righter for par and although she gave it a good rap it whistled just by the left edge.

Oh dear me this is getting sticky now for the former champion. Georgia Hall cards back-to-back bogeys to close out the front nine and slips back further from the leaders.

And we all now how tricky it gets after the turn. Buckle up, folks.

Steph Kyriacou somehow escapes this huge bunker on the 14th but can't escape from dropping a shot as she makes a bogey on the par five.

How would you fancy getting out of this trap?

Image source, Getty Images

All change! Georgia Hall drops back after briefly crashing the party and suddenly the six-way tie is broken up...

-10 M Lee (13), N Koerstz Madsen (4)

-9 L Salas (5), A Nordqvist (4)

-8 S Kyriacou (14), G Hall (8), B Henderson (7), L Duncan (5)

It's going to be one of those days isn't it! No sooner had Madsen broke clear then Lee joins her at the top on 10 under after a birdie two at the par three 13th hole.

Lee is six under for her round so far, with no bogeys, and is on course to set the clubhouse lead here.

Sophie Powell
Ladies European Tour player on BBC Radio 5 Live Sports Extra

Georgia Hall's expression never changes. You can't tell if she has just made eagle, birdie or double bogey.

Nanna Koerstz Madsen is your new Women's Open leader as she birdies the fourth hole to move to 10 under.

Madsen also needs a top two finish to make the Solheim Cup team by the way but I'm guessing her focus is most likely on that Women's Open trophy right now...

Oh no. You take three steps forward and one step back! Georgia Hall comes back down to earth after an eagle and a birdie with a bogey... and back she goes from the leading pack.