Speaking of luck, a fortunate red gets Williams up and running, but luck turns against him as he then inadvertently pots the pink ball after downing a red. Break over. 6-12

John Virgo
1979 UK Championship winner on BBC Two

If you get a bit of luck take advantage of it because it can always go the other way.

Steve Davis
Six-time world champion on BBC Two

Somewhere down the line you have to take a risk and Mark Williams did and John was able to capitalise.

Image source, .

That 127 was the 80th century of this year's World Championship. The players will have to go some to set a new overall record and beat the 86 from 2016 and 2015.

Williams one ahead after Higgins makes another centurypublished at 20:23 British Summer Time 6 May 2018

20:23 BST 6 May 2018

Frame 11: John Higgins 5-6 Mark Williams (127-8, Higgins 127)

The gap has been four frames, now it is only one. Williams' brave red into the middle proves to be the wrong choice and Higgins punishes him with his second century break of this final. A wonderful clearance of 127 is the best of the match.

After that Williams miss into the middle, Higgins is already up to 46. 46-8.

Brave, but maybe foolish from Williams, who opts to try and slow-roll one into the middle pocket and misses it. An appealing table awaits Higgins. 0-8

Steve Davis
Six-time world champion on BBC Two

They're both great thieves of frames they shouldn't be winning and it's quite fascinating about how they go about that.

A lovely shot to get the first point of frame 11 for Williams. He is on the black so looks able to be doing some damage over the next few minutes.

But the chance soon evaporates. He pots the black but has no position on a red and goes safe. 0-8

Ken Doherty
1997 world champion on BBC Two

I just love the cat and mouse games, the tactics from both players because they're both at the top of the game in that department. John can mix it with anybody and Mark Williams certainly can too.

Neil Stoneman: Have I fallen asleep and woken up back in the 90's? Loving the snooker.

Shirley: Enjoying the snooker, nice to see the older generation have still got it going on.

The longest frame of the match so far goes John Higgins' way. He has won three of the last four frames at the end of session one and start of session two.

The first sign of Williams crashing? A double kiss leaves the red over the pocket and that should be the frame for Higgins.

Laura Bennett: I think Williams has been running on adrenaline all day. Can see him crashing any time and ending this session level.

John Virgo
1979 UK Championship winner on BBC Two

Mark Williams has got to get the next chance you feel, if John Higgins gets it he wins the frame.

Twenty-four minutes for those counting in frame 10. It could be double that soon the way the table looks. Higgins takes one red off the table, but pockets the cue ball seconds later. 51-30

John O'Connor‏: I love these scrappy frames.

This is going to take some sorting out...

Image source, .

Shamoon Hafez
BBC Sport at the Crucible Theatre

I've just had a walk backstage and made my way into the practice room.

BBC Sport's newest recruit Alan McManus is there and is going to be doing a demo on one of the shots after this frame.

The Scot's analysis on TV during the championship has gained rave reviews on social media.

"That's pure potting pilferage," has been my favourite one-liner. #Wowzers.