13:00:

Zhao Xintong v Zhang Anda - Table One

Ding Junhui v Scott Donaldson - Table Two

19:00:

John Higgins v Shaun Murphy - Table One

Barry Hawkins v Elliot Slessor - Table Two

Image source, BBC Sport

A run of 75 seals victory for Mark Selby. After a tough start he took control after the interval.

Mark Selby is motoring towards the finish line. A break of 75 puts him three frames clear. It is a long way back for Zhou Yuelong from here.

Judd Trump is through courtesy of a very welcome half century. The Englishman will now meet Si Jiahui's Chinese compatriot Ding Junhui or Scotland's Scott Donaldson in the last eight.

Definitely not one Judd Trump will want to see again. But it did not end up costing him in that eighth frame.

Image source, Getty Images

Si Jiahui can't maintain his momentum despite a brilliant early red to the left middle. A frame of opportunities for both players goes to Judd Trump, who is one away from the next round.

Mark Selby knocks in a break of 71 to take a two-frame lead. That was much more brisk thankfully, with the time approaching 22:30 and plenty more snooker still to be played.

Oh hello. As Si Jiahui goes through the gears with a 58, there are a few signs that Judd Trump is struggling.

The Englishman has a chance to pinch the seventh frame but undercuts a difficult pink to the corner. This match could well go down to the wire.

Mark Selby will be delighted to get his nose in front. Zhou Yuelong is 35 points behind with 35 on the table when he puts the final red over the left pocket.

And even when Selby does the honours but then misses the black it is three snookers required territory as we get to the brown.

Zhou manfully carries on and the frame suddenly hits the 53-minute mark, before Selby knocks in the brown and playfully looks at his watch.

Si Jiahui knocks in three or four stunning long pots as he enjoys a run of 61 to take the frame mathematically out of Judd Trump's reach. The Englishman plays on for a snooker and then concedes after potting the blue.

Judd Trump picks up where he left off albeit in a scrappy fifth frame. He is now just two frames away from the last eight and a match against Ding Junhui and Scott Donaldson.

And he gets an early 32-point lead in frame six.

Pockets must conform to World Snooker templates. These give widths at the top of the cushion, of around 3½ inches for corner pockets and 4 inches for middle pockets. But you then have to remember that the cushion is slightly undercut.

Mark Selby sat down in his chair thinking he had lost the fourth frame after making a hash of a safety shot and leaving a red over the right corner.

But a dreadful miss on the following pink from Zhou Yuelong, gives the Englishman a reprieve and he tidies up to get back to 2-2.

Si Jiahui has a lead of 65 points when he breaks down in the fourth frame.

And all Judd Trump needs is a tiny opening and he takes it to pinch the frame with a break of 66.

What an effort from Trump, who has a decent lead heading into the mid-session interval.

Zhou Yuelong is playing some fine snooker. If he wins tonight he'll have sent a seven-time world champion and a four-time Crucible winner home.

And a wonderful break of 132 puts him 2-1 up against Mark Selby.

Judd Trump is not for hanging around and when he's in flow he's so hard to stop.The Englishman makes a superb break of 117 and hits the front again.

On table two, Zhou Yuelong, who checked out of his hotel the morning of his last-32 match against Ronnie O'Sullivan, enjoys a run of 57 as he bounces back to take the second frame.