One of the Class of 92 members to book their last four places was Scotland’s John Higgins, who was taken the distance before edging past England’s Jack Lisowski 13-12.

Higgins started the first of the day’s two sessions at the Crucible Theatre in Sheffield with a 5-3 lead and made a break of 123 in the first of the day to open up a three-frame advantage.

Higgins led 8-5 later in the session, before Lisowski claimed frame 14 on the black, and frame 15 following a safety battle on the pink, to end the session 8-7 behind.

In the evening Higgins led 11-9 before Lisowski produced a storming spell of snooker to win three in a row to move 12-11 in front.

Higgins made a break of 105 to force a decider where Lisowski missed a tough red to the left corner allowing the Scot to claim a hard-fought victory with a break of 72.

Higgins will face England’s Ronnie O’Sullivan, another member of the Class of 92, in the last four.

World number one O’Sullivan, bidding for a record-equalling seventh world title, came into the day’s final session leading Scotland’s Stephen Maguire 11-5.

Breaks of 71 and 126 saw O’Sullivan wrap up a 13-5 win in just 19 minutes of play today.

The third member of the Class of 92 in the semi-final line-up is Mark Williams of Wales, with the four-time world champion overcoming China’s Yan Bingtao 13-11.

The final session of the match resumed at 8-8 with the pair sharing the first four frames, which included a break of 135 from 47-year-old Williams.

The next two frames were also shared before Williams struck the front with a break of 66 to move 12-11 in front.

After Yan missed a long red in the next, Williams made a break of 78 to seal his last four place.

The semi-final line-up is completed by Judd Trump, world champion in 2019, as he beat fellow Englishman Stuart Bingham 13-8.

Trump resumed the first of the day’s two sessions with a 5-3 lead, but Bingham won the first five frames of the morning, including a break of 89, to lead 8-5.

After Bingham missed a black off the spot in frame 14 the momentum changed with Trump finishing the session level at 8-8, and pulling away in the evening session and winning 13-8.

A top break of 78 for Trump plus a big miss on the pink in frame 19 from Bingham, completed the turnaround, with Trump facing Williams in the last four.

The semi-final matches are due to be played over three days from tomorrow until Saturday (April 30), with both contests taking place over a scheduled four sessions and the best of 33 frames.