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Patrick Cantlay was tied for 50th spot and nine shots off the lead after the second round. Some comeback eh.

For the first time in a while, Francesco Molinari is chasing. The Italian goes for the 13th green in two... hanging on to the bank on the left by its fingernails.

Tiger Woods's approach is less nervy, middle of the green for two on the par five.

Xander Schauffele has five wins on the PGA Tour, not bad for 25 years of age.

Some decent titles on the record such as the Tour Championship but this is an all together new level. He's responding admirably, stroking home from 12 feet for birdie on 14, adding to the shot he picked up on 13.

All happening. All. Happening.

By the way... it's raining. Let's hope it doesn't get any heavier, we really really don't want this drama interrupted by a badly-timed break.

Not only is it raining precipitation, it's raining eagles...

Brooks Koepka responds from his double drop on 12 to eagle on 13. Like Patrick Cantlay two holes ahead of him he pulls out his best fist pump.

Anyone else need to just take a breather for a second or two? Incredible.

Oh my goodness.

Patrick Cantlay leads the Masters.

Is he the 2019 Danny Willett. A big fist pump as he drains a right-to-left breaker for eagle on 15.

And hang on a minute... what's Brooks up to?

Alex Miceli
US golf reporter on BBC Radio 5 Live

Francesco Molinari has to regroup now on the 13th.

I'm sure he's saying at this stage, 'I've made a mistake and I'm just going to move forward'. That is all he can do.

One of the best holes on the course. Well if you're watching.

A high draw helps negotiate the dogleg left with the tributary of Rae’s Creek running along the left and trees up the right of the fairway.

A hanging lie is almost guaranteed for the second shot which must also carry a handily placed stream at the front of the green!

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The final group crawl up to the next junction...

How on Earth has this happened? Suddenly there are 11 players separated by just two shots.

We'll tell you how it has happened... the 12th has acted like a roadblock, slowing the traffic down and creating a log-jam...

-11 X Schauffele (13) F Molinari (12), T Woods (12)

-10 P Cantlay (14), J Day (16), B Watson (16) J Rahm (16)

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Molinari for bogey... how he needs this. The Italian grimaces... missed it. A double bogey for our long-time leader...

Woods for the par... not easy... nailed it.

Someone has just thrown a cat among the pigeons. Suddenly there is a three-way tie for the lead!

Finau, by the way, has also doubled and slips back into the pack.

Justin Thomas with the classic 16th hole ACE at Augusta.

Over the flag, pitched on the slope, sits still, starts rolling, keeps rolling, drops.

A load of high fives and cuddles on the tee.

Magic.

Xander Schauffele makes the par-five count as he makes the green in two, lags up and taps in. Birdie and he will be sharing the lead in a second.

Right that Tiger.... this is your time to pounce.

Woods putts up from 48 feet, but he's left it short. Four nervy feet left.

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Hands hitting heads all over the place.

Francesco Molinari takes the bad news marginally better than his number one fan behind him, pulling himself together to knock on from the dropping zone to 11 feet.

Tiger Woods watches on from the other side of the water, no doubt feeling quite giddy inside...

Luke Donald pulling the same face that we've all just pulled...

Tony Finau has parred this hole every day. Will he follow Tiger or Frankie today? Frankie.

Facepalm for Finau as his ball hits the bank and is dragged by a hungry Rae's Creek.

Shaun Micheel
2003 US PGA Championship winner on BBC Radio 5 live

Image source, Getty Images

Tiger Woods has won so many majors by waiting for other players to make mistakes. He just plots his way around the holes and waits.

Never. In. Doubt.