Mark Selby with a shock 3–5 defeat to Andrew Pagett in the qualifying rounds of the 2013 Wuxi Classic. The tournament was the first to use a new format that required top-16 players to compete in qualifiers. In minor-ranking tournaments, Selby was runner-up in the Yixing Open, where he lost 1–4 to Joe Perry, and the Rotterdam Open, where he lost 3–4 to Mark Williams. He won the Antwerp Open, defeating Ronnie O'Sullivan 4–3 in the final. In December, in the seventh frame of his UK Championship semi-final against Ricky Walden, Selby compiled snooker's 100th officially recognised maximum break in professional competition.
Mark Selby semi-finals of the European Masters.<ref name="2016/17"></ref> Selby saw off Bingham 9–3 to reach the final of the International Championship and won the event for the first time by thrashing Ding Junhui 10–1 in the final in Daqing, China. Selby dominated the contest, winning the last seven frames in a row, in the most one-sided ranking event final since the 2012 Haikou World Open when Mark Allen beat Stephen Lee by the same scoreline. Selby made seven breaks over 50 while Ding managed a top run of just 47. In a high quality quarter-final match lasting five hours against John Higgins