Qualifying progressed through qualifying for the first time. Qualifying for the event was held between 5 and 14 April over four rounds, and 16 players qualified for the main stage. Matches in this round were played over the best of 19 frames.
David Gilbert, the 2019 semi-finalist, won seven of the first eight frames of his match against
Chris Wakelin, winning the first session 7–2 and the match 10–4. Murphy faced the last Chinese player remaining, Yan, and won the opening session 6–2, making the highest break of the tournament, a 144. After they were tied at 8–8 at the end of the second session, With a of 99 per cent in the first four frames, Selby won the opening session 6–2, Williams defended the strategy and commented that he had received backlash from fans and fellow players. McGill had the first chance in frame 22, but went in-off, allowing Bingham to win the frame. However, McGill won the next two frames to force a deciding frame. McGill had the first chance in the final frame, but was unable to get position on a red after going into . Bingham, however, made a break of 125 to win the match, which he called "the best of my career". Wilson ended the first session 6–2 ahead. After winning frame nine, Wilson was placed into a from which he failed to escape on several occasions, conceding 53 foul points to Murphy and allowing him to win the frame. Wilson won frames 11, 13 and 14 to lead by six frames at 10–4. Murphy won the final two frames of the session, punching the air in celebration, to trail by four. Wilson won the first frame of the third session, but Murphy won six of the next seven frames to tie the match 12–12. In the final session, Murphy won five straight frames to win the match 17–12. In total, Murphy won 13 out of the last 15 frames to win the match. After the match, Wilson commented that some of Murphy's celebrations were "theatrical", but Murphy replied that they were "in a theatre and we are putting on a show." Bingham took the opening frame against Selby, but trailed 1–3 into the mid-session interval. Bingham, however, made breaks of 92 and 82 in winning three straight frames to lead 4–3 and the match was tied at 4–4 after the first session. Selby made a break of 52 in frame nine, but still lost the frame as Bingham led again at 6–5. Selby won four of the next five frames to lead 9–7, during which he made two century breaks. Bingham tied the scores at 9–9 after breaks of 131 and 96, before frame 19 was also won by Bingham on the final black ball. During the frame, Selby was asked to play a shot by the referee after not having acted for three minutes. Bingham also won the next two frames, before the one after was halted twice for a and won by Selby. Selby won the next frame, but Bingham won the last of the session to lead 13–11. In the fourth session, Selby tied the score by winning the opening two frames, before Bingham won the next to lead 14–13. Selby then won three straight frames to get to one frame away from victory. Bingham won the next frame, but due to the length of the session, the remaining frames were delayed until the culmination of the other semi-final with the scores at 16–15. Returning three hours later, Selby won frame 32 after laying a snooker behind the green ball. This match was more than three and a half hours longer than the other semi-final, in part due to extended safety play and two frames having to be restarted twice.
Final won his fourth world title with an 18–15 victory over
Shaun Murphy in the final. The final was played on 2 and 3 May as the best of 35 frames held over four sessions, between Mark Selby and Shaun Murphy. Both players had won the World Championship previously. Murphy was appearing in his fourth final, having won the title in 2005, and been runner-up in 2009 and 2015; Selby was playing in his fifth final, having won the event in 2014, 2016, and 2017, and been runner-up in 2007. The two players shared the same coach, Chris Henry. Murphy won the first two frames of the match, but missed a pot in the third frame on a break of 65, allowing Selby to win the frame. Selby compiled a break of 89 in frame four to draw level at 2–2. Murphy took three of the next four frames to lead by two after the first session. Selby then tied the score again at 6–6 by winning three of the first four frames in the second session, despite Murphy not missing a pot in the first three. Selby then won four of the next five frames to end the second session 10–7 ahead, as Murphy failed to pot a ball for an hour. Murphy won the first frame of the third session with a break of 77, but missed the final black ball in the next, allowing Selby to win frame 19. Murphy won the next frame, but Selby scored the first century break of the final, a 107, in frame 21. Selby won frame 22 to lead by four frames, before Murphy made a break of 100. Murphy also won the next frame, but trailed 11–14 after Selby won the final frame of the third session. Selby won the opening frame of the fourth and final session, before Murphy cleared the table with a break of 43 to cut Selby's lead to 15–12. The two went into the mid-session interval at 16–13 after Selby played a poor shot. After a safety battle, Selby won the next frame with a break of 120, and was one frame away from victory at 17–13. Murphy, however, won the next two frames with breaks of 100 and 102. After Murphy missed a pot on a red down the cushion in frame 33, Selby cleared the table to win the match 18–15. This was Selby's fourth championship, behind only Hendry (with seven),
Steve Davis,
Ray Reardon, and Ronnie O'Sullivan (each with six) in the modern era, and equal with John Higgins. Davis commented that Selby was the "best all-rounder we have ever seen", and suggested he may win more world championships than Hendry. The final was broadcast to a peak audience of 4.1 million viewers on domestic television, equating to 27 per cent of all viewers in the United Kingdom, compared with the 2.9 million viewers for the 2020 event. The win raised Selby from fourth in the world rankings up to world number two. Murphy, who had celebrated specific shots throughout the event, vowed to use the experience to be more of an entertainer for the coming
2021–22 season. He reflected: "In terms of performance, it turned my year around and ended a poor season on a high note." Selby commented: "To win it once against Ronnie O'Sullivan for the first time was a dream come true – to win it four times is something I could only have dreamed of." ==Main draw==