of his second World Championship final in 2010, losing in the semi-finals 14–17 to Graeme Dott, despite pulling up to 10–11 and 13–14. In July 2010, Selby won the Six-red World Championship in Bangkok, with an 8–6 victory over Ricky Walden in the final. At the 2011 China Open, he beat Tian Pengfei, Robert Milkins, Ali Carter, and home favourite Ding Junhui, but was defeated 8–10 by Judd Trump in the final. At the 2011 World Championship, he set the record for the most century breaks compiled in a world championship match when he made six in his second-round tie with Hendry. This was also a record for a best-of-25-frames match, and took Selby's century tally for the season to 54, setting a new record for the most centuries compiled by one player in a single season. 2011–12 season Selby started the season by winning the non-ranking Wuxi Classic with a 9–7 victory over Ali Carter. He won his second ranking event at the Shanghai Masters, where he defeated Mark Williams 10–9 in the final, winning the last three frames from 7–9 behind. With this victory, Selby replaced Williams as world number one, moving to the top of the world rankings for the first time in his career. He also won the minor-ranking PTC Event 4 (the 2011 edition of the Paul Hunter Classic); having edged out Ronnie O'Sullivan 4–3 in the semi-finals, he achieved a 4–0 whitewash over Mark Davis in the final. Selby eventually finished fifth on the PTC Order of Merit and therefore qualified to the last 16 of the PTC Grand Final. He beat Ding Junhui 4–1, before losing 0–4 to eventual winner Stephen Lee in the quarter-finals. Selby progressed to the quarter-finals of the Masters in January, where he lost 2–6 to Shaun Murphy. He was defeated by Murphy again the following month, in the quarter-finals of the German Masters, losing the match 3–5. After reaching the final of the Welsh Open, where he lost 6–9 to Ding, he met Murphy for the third time in less than six weeks, in the quarter-finals of the World Open, this time achieving a 5–0 whitewash. However, he then suffered a 5–6 semi-final defeat against Mark Allen, despite having built up a 5–2 lead. Selby withdrew from the second round of the China Open because of a neck injury. His decision to withdraw was also a precautionary measure