Mark Selby in the last 64. In the first round of the Masters, Selby played against Mark Willams in a repeat of the 2017 edition. However, it was Williams who prevailed in their encounter 6–5. It was also the second time that Selby lost in a deciding frame at the tournament. Selby retained his China Open title, defeating Barry Hawkins 11–3 in the final. It was the 3rd China Open title he won in 4 years. Selby's two-year reign as World Champion came to an end at the first round of the 2018 World Snooker Championship. Facing Joe Perry, Selby trailed 2–7
Mark Selby one of the best matches ever played in the tournament's history, to reach his second world championship final and first for seven years. Selby played Ronnie O'Sullivan in the final, who previously had won all five of his finals and was the two-time defending champion. O'Sullivan led 3–0, 8–3, and 10–5, but Selby then won six frames in a row to lead for the first time and went on to seal an 18–14 victory for his first world championship title. With the victory, Selby became the ninth player to win the Triple Crown of World, UK and Masters titles (and