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 rookie Oliver Lines came from 0–4 behind to defeat him 6–4. In the invitational Champion of Champions tournament, he reached the quarter-finals, but lost 1–6 against Judd Trump. He suffered another early exit at the UK Championship when he lost 4–6 to David Morris in the last 64. Playing Shaun Murphy in the first round of the Masters, Selby fell 1–5 behind before recovering to 5–5, but lost the match 5–6 on the deciding frame. It was the first time that Selby lost in a deciding frame at the Masters, having won the previous 11 deciding frames. At the German