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
2014 World Snooker Championship on to win the final 18–14 and capture his first world title. In all, Selby won 13 of the last 17 frames, and his two highest breaks of the match - 127 and 87 - came consecutively to move from 15–14 to 17–14. The victory made Selby the tenth player to win all three Triple Crown events, and reinstated him as the world number one. This was O'Sullivan's first ever defeat in a World Championship final. O'Sullivan said "I want to congratulate Mark on a fantastic tournament. He's been the best player over 17 days, that was tough he had