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Phil the thrill sums up what's going on out there.

His drives on Thursday averaged 38 yards more in length. It's not just him, most players are losing a lot of yardage as they use more conservative clubs off the tee and get less bounce on the wet ground.

Royal Troon is taming them.

Zach Johnson at the 10th goes left off the tee, but finds a good lie. 

The right-hander has all sorts tucked away under his brolly - he's like the Mary Poppins of Troon today.

He shifts a towel to one side and pulls out a glove, before popping one towards the green. Johnson might have expected that to skip on a little further, mind.

-10: Mickelson (12)

-7: Z Johnson (9), Bradley (7)

-6: Kjeldsen (16), Stenson (9)

-5: Reed (13:04)

Selected others:

-4: Kaymer (10), Garcia (7); -3: Rose (14:04)

-2: Fowler (14:26), McIlroy (14:37)

-1: D Johnson (9), B Watson (14:37)

E: Westwood (12), Spieth (14:04), Willett (14:26)

+2: Day (14:26)

Tee times and full leaderboard, external

Not a single, not a double but a triple-bogey for Martin Kaymer.

An under-hit chip, an over-hit chip, a dig out of the rough and two putts. That hurt.

On the tee... Colin Montgomerie.

Now then Monty, let's not start with a double bogey like yesterday. 

At even par, Montgomerie can really make the cut here if he wrestles successfully with these changing conditions.

Image source, Getty Images

It's as if Phil Mickelson has them under a spell. "I'll tell you what gents, I'll drop my first shot of the week but we'll time it so that you all meltdown at the same time. Agreed? Good."

Henrik Stenson can't make a clutch putt on nine. Bogey. Not what you want ahead of the tough holes.

Kaymer will drop at least two shots, maybe more. So the leaderboard will look different in a moment.

Zach Johnson almost capitalises on that Mickelson bogey immediately.

The American continues to find the good ground off the tee and winds up with a birdie chance to close the gap on the leader to two shots.

But he can't add to those four previous birdies today, instead Johnson settles for a par that puts him seven under heading into the back nine on day two.

The 10th hole just seems to turn players to jelly and Martin Kaymer is the latest to wobble. He's chipping up a bank onto the green and underhits the effort. It's got Sunday hacker written all over it and the ball rolls back to his feet.

Reload, settle down. Here we go again... this time he whacks it... oh how he whacks it... it's through the green and into the rough.

He made birdie here yesterday. I think that's four he's taken and he's not on the green.

Ben Dirs
BBC Sport at Royal Troon

The weather's not great out there but the attendance seemed sparse yesterday when the sun was shining and it appears to have thinned out today. 

You didn't need a press pass to get clear views of Mickelson this morning and many of the grandstands are almost empty. Apparently the organisers will not be announcing attendance figures until Sunday.

Image source, AP

Phil flounders slightly on the 12th

It takes him several attempts to keep his ball still after moving his marker, and with a long putt up the slope to save par Mickelson shifts it to the right and drops his first shot of the championship.

Birdie-birdie for Charl Schwartzel on 13 and 14, that's him back to five under for the day and four under for the tournament. He's the performer of round two so far.

Sergio Garcia picks one up too, he's one under for the day, four under for the tournament. Not yet out of it.

Well, Phil Mickelson sends his tee shot right and then launches his next stroke diagonally across the fairway and into a crowd of spectators.

Will it be a first dropped shot of the championship for Lefty?

Martin Kaymer chunked an iron at the ninth green and ran through the back. What can he muster from here then? Up and down would be good, straight in would be better!

How about that, in she runs and wedges between the lip of the cup and the pin. A brilliant hole out.

More quality from Phil Mickelson on the eighth, the infamous par-three Postage Stamp, nailing his tee shot. Is there no stopping this man?  

Neil Leverett: Has @MickelsonHat, external got this sewn up already?   

He's flying, but the five-time major champion knows it's a marathon, not a sprint...

Mickelson finds the middle of the 11th fairway and with his second shot makes the green, no messing from the leader this morning.

He looks towards a cloud-filled sky as a good opportunity for birdie on a tough par four is missed, before tapping in to the cup to stay at 11 under. A pair of pars for Phil since the turn.

But as Mickleson's birdie putt goes begging, Zach Johnson in the chasing pack sniffs out a chance to close the gap to four strokes and does so with his fourth birdie of the morning.