There are 19 players within five shots of the lead at the moment - hope you weren't thinking of sloping off for an early night...

Lee Westwood chases an approach on to the green from the thick rough at five - he needed that, just wants to steady the ship.

Bryson DeChambeau is only 165 yards away from the pin after nailing his drive 320 yards. He clips a wedge to the right of the cup.

All pars so far from Justin Thomas and playing partner Doug Ghim. Neither of the Americans able to take advantage of the bizarre goings on behind them.

Shane Lowry is suddenly in the mix. The Open champion is four under through 10 today and a birdie to start the back nine has taken him to nine under par for the tournament, just three off the lead.

Corey Conners has sneaked up the leaderboard, rolling in his fifth birdie of the day on the 13th.

The Canadian has also had an eagle and could be posting an imposing target in an hour or so.

After all that madness, Lee Westwood still leads by two.

That was like watching everyone back out on 29 March...

DeChambeau is on the pines, with a look at the green but playing back towards the water, he paces up and down to size it up. This is his fifth shot... and it's sensational, what a shot from the American, a little skip and run that nestles up besides the pin. That was remarkable after his first two efforts on this hole.

He makes double bogey, somehow.

Westwood reaches for his putter on the fringes, starting it left and watching it break right but a little too late - it leaves him work to do for a bogey. Five feet or so.

In it goes, he breathes a huge sigh of relief. Just a bogey for Westwood.

Sergio Garcia is out with the putter from just short of the seventh green. If the Spaniard can knock this in then he's going to be knocking on the door.

No. Too much juice on that. The ball hops out of the hole.

Justin Thomas can't, missing a short birdie putt on the fourth.

Paul Casey can't. He's bogeying the fifth.

Jon Rahm can't. He's in the sand with his second on the fifth and splashing out to eight feet and missing the par putt.

"Oh my gosh, what is going on..." quips Bryson DeChambeau, as he leaks his third way right and it skips off the cart path. The American is in a whole world of bother.

This is damage limitation for the US Open champion.

The officials are not trying to work out where Lee Westwood's ball entered the water. It's almost on a peninsula between the bunker and wet stuff.

He finds the back right of the green - tricky two-putt coming up for bogey.

Now then, Bryson DeChambeau looks to have just topped his drive at four - that was off the shaft! He stares at his 3-woodin disbelief. That's travelled just far enough to make the water.

Oh my word. Lee Westwood absolutely shanks his drive too and also finds a pond lurking to the right of the fourth - what's going on out there?! Nightmare for the leading duo!

-13 L Westwood (3)

-11 B DeChambeau (3)

-10 S Garcia (6), B Harman (5), J Rahm (4), J Thomas (3), D Ghim (3)

-9 C Conners (11), P Casey (4)

Not dropping for Bryson today. DeChambeau leaves another up at three.

Lee Westwood is 12/13 feet from the cup, a few onlookers perched on the bank watching behind him, but the Englishman hangs his putter out to signal it's drifting right. Should be a tap-in par and on he goes.

Paul Casey is in a horrible spot on the par-four fourth. Ball in the fairway bunker, feet outside of it. He's 125 yards from the green and can certainly get there.

He smashes his ball out and it does indeed reach the short stuff but he's managed to get plenty of action on the ball and it spins violently backwards and drops off the green into the water protecting it.

A great chip up the green sees him drop just the one though.

Less drama for Jon Rahm. A delicate putt down the slope to tap-in range gets him a par.

This was costly for the leader Lee Westwood.

Bryson DeChambeau finds the heart of the green at the par-three third. Lee Westwood lands his slightly closer to the pin but it trickles off a touch towards the fringes. He'll have a look, for sure.

Justin Thomas and Doug Ghim tick off the third with another par apiece - steady as you go. They both remain three back, but now have company at 10 under.

Just doesn't quite have the legs, and Lee Westwood will have to settle for a bogey that reduces his lead to two once more.

Bryson DeChambeau can close the gap further with this birdie putt, but rolls it to the left of the cup and will have to tidy up for par.