A quite incredible day of action from the World Snooker Championship - and one that John Higgins will never forget after edging a Crucible classic against Ronnie O'Sullivan.

Ditto Hossein Vafaei after his stunning victory over world number one Judd Trump this evening.

Be sure to read Michael Emons' report from Sheffield on a dizzying day of snooker.

We will back on Tuesday at 10:00 BST for the quarter-finals with live coverage on the BBC Sport website and iPlayer. However, if you're still looking for some snooker stories to catch up on in the meantime check these out:

• Crucible pressure '50 times worse than driving test'
• 'Odds-on' - Hearn tips 2029 Worlds to stay in UK
• How many 147s have there been at the Crucible?
• Memorable O'Sullivan moments as snooker great turns 50
• 'Paul was fun': Remembering snooker's lost great 20 years on

10:00

Zhao Xintong (1) v Shaun Murphy (8)

Mark Allen (14) v Barry Hawkins (11)

14:30

John Higgins (5) v Neil Robertson (4)

Wu Yize (10) v Hossein Vafaei

19:00

Zhao Xintong (1) v Shaun Murphy (8)

Mark Allen (14) v Barry Hawkins (11)

Not much to choose between the players, but a brilliant fightback from Hossein Vafaei who came into this evening two frames down at 9-7.

Image source, Getty Images

Hossein Vafaei, speaking to BBC Sport after his 13-12 win over Judd Trump, said: "The biggest win of my career? Exactly, against the world number one who is such a tough opponent. I respect his game and him off the table and on the table. Today, I played a little bit better than yesterday. I was also managing the game a little better than before.

"I said if it's my tournament it's going to happen. I said 'God please help me. Where are you father, show me something' as well. I wanted to be a little bit calmer and more relaxed. Before I was a little bit more exciting and when I go to the match I was a completely different person. It's better to sometimes to let the game come out.

"Now I play Wu Yize. Fantastic! He is on the of the talented guys and such an amazing talent. I cannot wait to play him and see how good he is."

Steve Davis
Six-time world champion on BBC Four

That was a superhuman performance from Hossein Vafaei. It's the best match he's played in his life and he is into the quarter-finals.

Vafaei has to not get overexcited or carried away in the moment.

Image source, Getty Images

Judd Trump, speaking to BBC Sport after his defeat to Hossein Vafaei, said: "I was not good enough tonight really. I had my chances. I played well to get back to 12-11 up then he made a good break to go 12-12. I had a good chance in the last frame but just ran out of position, really.

"It follows the pattern of the season. I've had chances in deciders but just not been clinical. Under pressure it's just not been good enough. My positional play has been quite lapse and maybe overthinking things a little bit.

"There was probably a bit of a lack of confidence when I've not won as much or been as clinical in the utmost pressure. This season follows a pattern. Overall, nothing to complain about. There's no excuses. I gave it my all and Hossein made two amazing breaks in the last two frames. Hopefully he goes on to win it."

Joe Perry
Former World Championship semi-finalist on BBC Four

Hossein Vafaei took the game to Judd Trump at a time when the pressure was really intense. He was calm, collected and struck the ball like an absolute dream during that break in the final frame. That was a very professional performance.

It is the biggest shock of the tournament with the world number one going out to an unseeded qualifier, but not from the way Vafaei played. He held his own.

Steve Davis
Six-time world champion on BBC Four

What a performance from Hossein Vafaei. He's a totally different player, a different person. He comes here with a certain amount of humility which is different from the excitable player of the past. He has got focus and bottle.

A really warm embrace from Judd Trump to Hossein Vafaei, who briefly lies his head on the Englishman's chest.

Classy gesture from Trump.

Vafaei is beaming from ear to ear as he bows to the Crucible who are on their feet giving him the most generous of ovations.

Vafaei knocks out Trumppublished at 22:26 BST 27 April

22:26 BST 27 April

Trump 12-13 Vafaei

A missed yellow but Judd Trump concedes after a break of 91 from Hossein Vafaei.

Absolutely incredible from the Iranian, who has come through qualifying to knock the world number out of the World Snooker Championship.

Wow. Just wow.

Hossein Vafaei is confidently striding round the table as his break goes into the eighties now. He pots the red he needs for frame ball before moving on to the colours.

Stephen Hendry
Seven-time world champion on BBC Four

Hossein Vafaei has shown great composure here. It looks like another World Snooker Championship is slipping away from the world number one.

Superb from Hossein Vafaei, as he pots a red and screws the cue ball into the pack to break them up. This break ticks up to 47 now.

Stephen Hendry
Seven-time world champion on BBC Four

Hossein Vafaei's cueing action is still holding up under this intense pressure.

Image source, Getty Images

A deft bridge from Hossein Vafaei helps him pot a tricky red and out of the pack. He follows it up with the black. This break is worth 24 now.

Stephen Hendry
Seven-time world champion on BBC Four

The secret to playing deciders is 100% commitment to the shot.

Another blunder from Judd Trump during this safety exchange as a double kiss leaves the cue ball down at the business end of the table.

A chance for Hossein Vafaei.