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.
2017 World Snooker Championship at one point. The top 16 seeds automatically qualified for the last 32. Defending champion Mark Selby was seeded 1, while other seedings were allocated based on the latest world rankings. All the other players (from 17th place in ranking) started in the first round of qualifying and were required to win three best-of-19-frame matches to reach the Crucible. Qualifying rounds were held at the Ponds Forge International Sports Centre in Sheffield from 5 to 12 April 2017. After losing to Mark Selby in the China Open final, two-time former world champion Mark Williams failed to regain his place in