Mark Selby of both the Masters and Welsh Open to Ronnie O'Sullivan, but won the Gdynia Open with a 4–1 victory over Martin Gould. Before the World Championship Selby withdrew from the PTC Finals and China Open due to personal reasons. He beat Robert Milkins 10–6, Sam Baird 13–11 and Kyren Wilson 13–8 to face Marco Fu in the semi-finals. Selby drew level at 12–12 thanks to winning a 76-minute frame, the longest in Crucible history and went on to win 17–15 with an excellent snooker on the brown in the final frame. He took a 6–0 lead over Ding Junhui in
Mark Selby beat his good friend Shaun Murphy 10–6 to win the tournament. Selby also participated at the Players Tour Championship. He successfully defended his Paul Hunter Classic title with a 4–1 win over Joe Swail in the final. He then lost in the final of the Antwerp Open 1–4 against Mark Allen, and won the Munich Open by defeating Graeme Dott 3–4 in the final. He then finished number one on the Order of Merit, and qualified for the Finals, where he lost 3–4 against Jack Lisowski. Selby then went on to win his third Masters title, beating Stuart Bingham 6–5