Steve Davis
Six-time world champion on BBC Two

When you get regular confirmation during the season that you are a winner, it really does help here at the World Championship. That is maybe the difference now between the players left in who do not have the confidence that Judd Trump has.

Stephen Hendry
Seven-time world champion on BBC Two

There was some signature Mark Williams play at the start of that 10th frame but then, at the risk of sounding repetitive, another easy ball cost him. He's now missed three or four blacks off the spot in the match so far.

Definitely worrying times for Mark because his opponent looks so sharp. There was no doubt he would clear up there.

Oooh, another case of near yet so far for Williams - he sends the brown towards the top left, it wobbles off the jaws and bounces out.

Trump however cannot respond, getting a bad bounce as he tries to break open the pack before missing a black into middle left by quite a long way.

Half a sniff for Mark Williams at the start of the 11th frame, as Judd Trump plays a safety shot too thick. It gives the Welshman a chance to open the scoring, which he does with a well-angled red into the bottom right.

While this next frame is not an essential win for Williams, he really could do with getting on the scoreboard sharpish.

The BBC's Ask Me Anything team asked for your questions about snooker during the ongoing World Championship.

Some of those questions about the sport were put to the World Snooker Tour, who have provided responses.

Roger asked: Why do snooker players keep playing a break after they have won a frame?

A: Perhaps to give themselves extra confidence, and because they enjoy potting balls! Also there may be a chance of a century break which is great for the player and the crowd.

In addition to World Snooker's answer, it's also worth adding that there is a £100,000 bonus available from the World Snooker Tour for the first player who makes 100 century breaks in a season.

Judd Trump reached that milestone during his second-round match against Shaun Murphy.

Trump polishes off a break of 65 and snatches the frame from under the nose of Mark Williams.

Absolute sickener for Williams.

This could be a real blow for Mark Williams - he did all the hard work, but seemed to take a routine black for granted. He's muttering to himself in his seat, he knows he's made a major error.

Trump is currently cleaning up and closing in quick on Williams' mark of 58.

Having done the hard yards early in this frame, Williams is now well positioned to go on the reds and black. He takes his break past the half-century mark.

The 50-year-old would expect to take the 10th frame from here - but he misses a simple black!

Trump comes to the table 58 behind, with 67 remaining.

Mark Williams gets a few more welcome points on the board, but has to spend another minute agonising over a red as he isn't sure about where the cannoned balls will end up.

It's a difficult break this, but one Williams is handling well as he delicately lands the pink into the bottom right to keep the scoring going.

Trump sends Williams back up the table, but the Welshman responds with a magnificent red into the bottom left. He rolled that almost direct along the cushion, splendid cueing.

Williams then sends the cue ball perfectly behind the brown. Technically, those were two of the best shots of the championship so far.

Mark Williams is a little late arriving to this session, but he seems to have arrived in time for the second frame as he and Judd Trump exchange snookers in the early stages.

A particularly tricky shot from Trump has Williams examining the table for nearly two minutes, before he drops the white with dead weight into the pack - managing to leave nothing on for his opponent. Excellent play.

Steve Davis
Six-time world champion on BBC Two

There are signs which might be dangerous for Mark Williams from Judd Trump, who has come out and blasted that first frame out of the water. Judd got let off the hook and maybe Mark has missed a trick yesterday.

Dennis Taylor
1985 world champion on BBC Two

Just one naughty shot in that clearance from Judd Trump. A great start.

Judd Trump does indeed clean up, pulling out a few exhibition shots too in a break of 70 - leaving him with a total score of 130 in that frame.

Very satisfactory start to the afternoon for the world number one.

Stephen Hendry
Seven-time world champion on BBC Two

Yesterday was maybe Judd Trump's worst session of the tournament and he still won it. He'll just want to go out today and increase his control on the match.

Steve Davis
Six-time world champion on BBC Two

Judd Trump showed a lot of resilience yesterday. It was a bad session. Mark Williams took on some really open and aggressive shots and tried to bully Trump.

A reminder that this is the clash of the lefties - Mark Williams and Judd Trump are the two most decorated left-handed players in snooker history.

Williams however is two right hands so far - he catches the right middle bumper on the way back up the table on a safety, to allow Trump back to the table with scoring chances.

It looks like Judd Trump may be approaching end of break at 48. However, a terrific shot off two cushions following the blue keeps it going - albeit briefly.

Inopportune placing from the following red means Trump has to play a safety with the break ending at 56.