Opening rounds (first round—quarter-finals) (pictured in 2010), defeated the defending champion
Neil Robertson 10–8 in the opening round The first round was played from 16 to 21 April as the best of 19 frames held over two . Defending champion Neil Robertson led
Judd Trump 7–6, but lost the match 8–10. Trump, having recently won the
2011 China Open, commented "I'm on a high at the moment and I don't want it to finish. I want to make winning a habit". Both players lost their opening round match, as Pagett lost 7–10 against
Jamie Cope and Jimmy Robertson lost 1–10 against
Mark Selby. Both
Barry Hawkins and
Rory McLeod reached the second round of the World Championship for the first time. Hawkins defeated
Stephen Maguire on a 10–9 and McLeod defeated
Ricky Walden 10–6.
Ronnie O'Sullivan attempted to withdraw from the event one week before it started, but later, when asked for a written confirmation, changed his decision. He compiled his 100th
century break at the venue in his first round match against
Dominic Dale, as he won 10–2. Previous winner
Graeme Dott led
Mark King 7–3, but was reduced to a 7–6 lead. Dott won three of the next four frames to complete a 10–7 victory. Seven-time winner Hendry defeated
Joe Perry 10–9 on a deciding frame, but hinted that he might retire after the event. In total, five out of the sixteen seeded players lost their first round matches: Neil Robertson, Maguire, Walden,
Marco Fu and
Peter Ebdon. Fu lost 8–10 against
Martin Gould and Ebdon lost 8–10 against
Stuart Bingham. The second round was played as the best of 25 frames, held over three sessions. This was the first time six century breaks had been made in a match at the event, and also for a best of 25 frames match at any event. Trump defeated Gould 13–6, with his opponent considering him to be a favourite to win the event, and Trump commenting "I feel I've got the game to go out and win it". Dott and Carter were tied at 11–11 in their second round match, before Dott won the next two frames to complete a 13–11 victory. Eleventh seed
Mark Allen also went to a deciding frame, as he defeated Hawkins 13–12. The quarter-finals were played as the best of 25 frames. Trump, rated an 80–1 outsider at the beginning of the tournament, defeated previous year's runner up Dott 13–5 to reach the semi-finals. Ding won his match 13–10 against Selby to become the third Asian player to reach the semi-finals of the world championship, following
James Wattana and Fu. As a result of Selby's exit, Williams became the new
world number one after the event.
Later rounds (semi-finals—final) The semi-finals were played as the best of 33 frames, held over four sessions. Trump defeated Ding 17–15 to become the second youngest player (after Hendry in
1990) to reach the final of the event. Trump also reached his second consecutive ranking final after winning the China Open at the start of the month. In China, the second session of the match drew a peak audience of nearly 30 million viewers and averaging over 19 million, with the
World Professional Billiards and Snooker Association claiming it was the highest rated sports programme of 2011 up to that point; however, the
Women's Tennis Association claimed that the
women's singles final of the
Australian Open held earlier in the year drew an audience of 60 million viewers on Chinese television. Williams led Higgins 5–3 after the first session, and maintained his lead after the second session, which ended 9–7. Higgins, however, then won six of the next eight frames, to lead 13–11 after the third session. Higgins won the match 17–14 to reach his third final in five years. During the 28th frame Higgins was heckled by a member of the audience, "How did you swallow that £300,000, John? ... You're a disgrace to snooker." in reference to the
News of the World allegations the previous year of match fixing, for which the heckler was later ejected from the venue. Higgins had only returned from a six-month suspension due to the incident in November.
Ted Lowe, BBC commentator for many years and the deviser of the long-running snooker programme
Pot Black, died at the age of 90 on the morning of 1 May. Before the start of the final that day, a minute's applause in honour of Lowe took place. After the first session was tied at four frames all, Trump won the second session 6–3 to take a 10–7 lead into the second day's play. Higgins took a 13–12 lead after the third session of the final, which he won 6–2. Trump levelled the match at 14–14, before Higgins won four of the last five frames to win the match 18–15. Higgins complemented Trump "He was the better player. He was playing a brand of snooker I have never seen before in my life." The highest of the tournament was 138 made by both Ding and King. This was the first time since
1987 that the highest break of the tournament was lower than 140, when it was 127 made by Davis. ==Main draw==