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 second of the season after Robertson), and also the twelfth player to win the World and UK Championship double in their career. In winning the world title, Selby also retook the world number one spot. In the first ranking event of the season, the Wuxi Classic, Selby lost 3–5 to Liang Wenbo in the last 32. He won the minor-ranking Riga Open, defeating Mark Allen 4–3 in the final, but lost 5–6 to Allen in the semi-final of the ranking Shanghai Masters. He suffered a surprise early exit in the last 128 of the ranking International Championship when 19-year-old tour