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
2017 World Snooker Championship Ali Carter 10–7 in a tense encounter to reach the last 16. 2010 champion Neil Robertson made his 500th career century during his 10–4 first round win over Noppon Saengkham of Thailand. Stuart Carrington became only the fifth player, after John Higgins, Ronnie O'Sullivan, Mark Selby and Neil Robertson to make century breaks in 3 consecutive frames in a World Championship match during his encounter with Liang Wenbo; however, Liang won the match 10–7. In total, 7 former world champions qualified for the last 16: Selby, Bingham, O'Sullivan, Higgins, Robertson, Dott and Murphy. Ebdon was the only former champion in