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.
2014 World Snooker Championship two frames he made breaks of 94 and 92, narrowly missing his 100th century of the season. Barry Hawkins met Ricky Walden in a repeat of the previous year's semi-final. Hawkins defeated Walden again, this time 13–11, to reach his second Crucible quarter-final. Mark Selby defeated two-time runner-up Ali Carter 13–9. Selby won eight of the second session's nine frames against Alan McManus, after they could only finish seven frames in the first session, and went on to win the match 13–5. Having trailed 2-0 and needing three snookers in the third frame, O'Sullivan won 13 of the last 14