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 to the final of the China Open and he took the final three frames against Mark Williams to claim his fourth ranking event title of the season 10–8. No one came close to Selby as he progressed through to the semi-finals of the World Championship, which included a 13–3 thrashing of Marco Fu in the quarter-finals with a session to spare. He next faced Ding Junhui who closed the gap to 16–15, after Selby had been 16–13 ahead. Selby won the 32nd frame to reach his third world final in four years. Selby had an incredible run of winning 12