Mark Selby in the first round of the UK Championship, scoring 6 breaks over 40 in those five frames. On 17 January 2010, Selby won his second Masters title after reaching the final for the third time in as many years in a repeat of the previous year's final, where he lost to Ronnie O'Sullivan. O'Sullivan took a commanding lead at 9–6 leaving him just one frame from victory, but Selby played some of his best snooker of the season to overcome the three-frame deficit, taking the championship 10–9 and the £150,000 winner's cheque. At the 2011 China Open, Selby beat Tian
Mark Selby He continued his form at the Shanghai Masters, where he won his second major ranking event by defeating Mark Williams 10–9 in the final, having trailed 9–7. The win also meant Selby usurped Williams as the world number one, making him the ninth player to hold the top spot and the first to do so without having previously won the World Championship. He also won the minor-ranking PTC Event 4 (also known as the Paul Hunter Classic) with a 4–0 whitewash over Mark Davis, having edged out Ronnie O'Sullivan 4–3 in the semi-finals. Selby would later finish 5th on the