John Higgins pots the brown then sinks the blue and pink of their spots to bank a frame chock full of mistakes in his favour.

John Higgins thumps in the green, but declines to take on the brown.

He subsequently snookers Shaun Murphy behind the black.

Murphy escapes at the second attempt an leads 54-51 with four colours remaining.

Audacious from Shaun Murphy! The 'Magician' pots the yellow with a brilliant double.

However, he misses the green into the top-right pocket.

Blunders galore at the moment.

This is turning into quite an error-strewn frame.

Shaun Murphy fluffs a safety shot which allows John Higgins an opportunity.

The Scot sees off the final red then goes to work on the colours.

John Higgins constructs a measured break of 34, only to miss a red into the middle pocket which allows his opponent back to the table.

Three reds left, but two of them are close to the cushion.

Shaun Murphy seems to be coasting through the frame, but then misses a straightforward black off its spot into the corner pocket.

Break over at 44.

John Higgins springs to his feet.

Shaun Murphy looks uber focused as he patrols round the table.

A break of 36 from the 'Magician' who pots the black and then further opens up the pack to his advantage.

Shaun Murphy's break opens up the pack once again and forces John Higgins into taking on a long red into the left-corner pocket.

The Scot sees the red rattle and then come out while the cue ball dislodges another red from the pack.

Murphy approaches a handy-looking table.

Stephen Hendry
Seven-time world champion on BBC Two

John Higgins can win any type of match.

If he misses a shot he comes straight out the next frame and plays flawlessly - that's the competitor he is.

John Higgins clears up the rest of the table with a break of 44 to secure the frame.

All-square.

Shaun Murphy returns to the table after John Higgins misses a red, but is unable to find the necessary positions to test the Scot.

Higgins sets to work on the colours with the frame effectively in the bag.

Stephen Hendry
Seven-time world champion on BBC Two

If you look at John Higgins and Shaun Murphy they both know their shots, are both brilliant snooker players. But it's who wants it the most and who can play that snooker under the utmost pressure.

John Higgins finds a bit of groove at the table now.

He pots a red followed by the pink to leave Shaun Murphy requiring snookers with a break of 55.

There's enough on the table for a century.

Dennis Taylor
1985 world champion on BBC Two

Sometimes John Higgins seems to play his best snooker when he's under pressure.

John Higgins is able to capitalise on a modest safety shot from Shaun Murphy.

He has a break of 23 and counting but there's still plenty of work to do for the 50-year-old Scot with the reds still closely grouped.

Control of the cue ball will be key to unlocking them.

After a fairly open first frame, it's a bit more tactical following John Higgins' orthodox break. The black is out of commission behind a cluster of reds.

Who will blink first here?

Stephen Hendry
Seven-time world champion on BBC Two

We thought that pink in the middle was going to cost Shaun Murphy. That was a big let-off for him. Huge. I think Shaun is due a big session.

Shaun Murphy does not need a second invitation, though. He mops up the rest of the reds before knocking in all the colours bar the black.

Murphy takes the first frame of the evening session.