After the clash, he insisted that he “got away” with the win.
He said: “I didn’t play as well as the other day but I was kind of expecting that.
“I felt a bit inexperienced at the end. I just push the boat out at the wrong times and he could have been coming back at me.
“It could definitely have been 5-5, so I got away with that.
“The fans here are amazing. I think they maybe watched the game against Selby the other day and appreciated it, because he had 94% pot success.
“I was looking back on it and to beat him is really tough. I felt a lot of support tonight and sometimes that can put me under pressure.
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“My concentration is getting better though and that definitely helped. The crowd in York is my favourite bunch.”
Elsewhere, Mark Allen booked his spot in the final eight with a 6-4 victory over Wu Yize.
List of all-time Snooker World Champions
BELOW is a list of snooker World Champions by year.
The record is for the modern era, widely considered as dating from the 1968-69 season, when the World Professional Billiards and Snooker Association (WPBSA) took control of the sport.
The first World Championships ran from 1927 – with a break from 1941-45 because of World War II and 1958-63 because of a dispute in the sport.
Joe Davis (15), Fred Davis and John Pulman (both 8) were the most successful players during that period.