Mark Selby Open, losing 1–4. Selby won his first ranking title of the 2017/18 season by retaining the International Championship after surviving a fightback from Mark Allen, who trailed 3–8 and 7–9 in the final but the Englishman prevailed 10–7. As 2017 World Snooker Champion, Selby automatically qualified for the 2017 Champion of Champions. However, he lost in the quarter-finals to Luca Brecel by a scoreline of 4–6. At the 2017 Shanghai Masters, Selby crashed out to 2011 finalist Mark Williams in the quarter-finals 3–5. Selby's reign as the UK champion came to an end with a 3–6 defeat to Scott Donaldson
Mark Selby semi-finals of the European Masters.<ref name="2016/17"></ref> Selby saw off Bingham 9–3 to reach the final of the International Championship and won the event for the first time by thrashing Ding Junhui 10–1 in the final in Daqing, China. Selby dominated the contest, winning the last seven frames in a row, in the most one-sided ranking event final since the 2012 Haikou World Open when Mark Allen beat Stephen Lee by the same scoreline. Selby made seven breaks over 50 while Ding managed a top run of just 47. In a high quality quarter-final match lasting five hours against John Higgins